Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
hoc thieu » toc thieu, hoc hien
thanh tra » thanh toan, thanh hoa
ho chieu » theo chieu, doi chieu, mot chieu
thong tu » phong tuc, thong tin, thong ke
hang ca » hang va, nang cao, hang tai
tra cau » tra sau, ta cau, tra cuu

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 (hoc thieu)) tinh - hanh ((thong tu) or (hang ca)) nhung cong thanh tra cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) tinh - hanh ((thong tu) OR (hang ca)) nhung cong thanh tra cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) tinh - hanh ((thong tu) or (hang ca)) nhung cong thanh tra cau*.