Place cabbage, bean sprouts, celery, and green onions in a large wok and stir fry over a high heat until vegetables cook down (add a little water if necessary). Mix in shrimp, stir fry until cooked.
In a large skillet, brown ground meat. Drain grease and add the meat to the vegetable and shrimp mixture. Continue to fry over a high heat; add oyster sauce, soy sauce, garlic, and MSG. When well blended, remove mixture from heat.
Place a tablespoon of the meat and seafood mixture (or more, depending on how large your wonton skins are) into the center of each wonton skin. Fold the wonton skin over to make a package of the meat mixture inside, and seal the skin closed by dipping your finger in a little water and pressing the ends together.
Fry the wontons in 1/4 inch of vegetable oil until golden brown.