Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tinh quan » trinh quan, tin quan, sinh quan
hoc hieu » hoc thieu, hoc hien, doc hieu
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: hoc hieu manh - hanh ((tinh quan) or (tinh quang)) nhung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh ((tinh quan) OR (tinh quang)) nhung cong tan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh ((tinh quan) or (tinh quang)) nhung cong tan toan cau*.