Perhaps you should try some spelling variations:
thanh tung » thanh cong
chau tinh » cuu tinh, ha tinh, cua tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
dong cong » duong cong, dung cong, dang cong
cong tac » cong ty
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
tung va » trung va, tuong va, dung va
va dong » van dong, ha dong, xa dong

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chau tinh) or (lieu tinh)) - thanh tung va dong cong tac ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chau tinh) OR (lieu tinh)) - thanh tung va dong cong tac ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: doc ((chau tinh) or (lieu tinh)) - thanh tung va dong cong tac ((toan cau) or (toan tap))*.