Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
trong tac » trong cac, trong tan, trong tuc
tuong tac » cong tac, luong tai, tuong lai
theo chu » theo chieu, cho chu, chao chu
cong san » cong tac
san tran » tan tran, ban tran, dang tran
tran cau » tran chau, toan cau, ran cau
chu van » cuu van, chu han

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu van - hanh ((trong tac) or (tuong tac)) thong cong san tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu van - hanh ((trong tac) OR (tuong tac)) thong cong san tran cau.
• Adding a wildcard symbol may retrieve word variants: theo chu van - hanh ((trong tac) or (tuong tac)) thong cong san tran cau*.