Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trang va, thanh va
trinh va » trinh van, trinh vat, trinh ve
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (theo tieu)) xanh - canh ((tranh va) or (trinh va)) nhung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo tieu)) xanh - canh ((tranh va) OR (trinh va)) nhung cong tan toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo tieu)) xanh - canh ((tranh va) or (trinh va)) nhung cong tan toan cau*.