Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thieu manh » hieu manh, tien manh, trieu minh
hoc thieu » toc thieu, hoc hien
cua nhung » va nhung
anh tang » anh bang, anh dang, anh nang
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 thieu manh - ((anh tang) or (nhanh quang)) cua nhung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu manh - ((anh tang) OR (nhanh quang)) cua nhung cong tan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu manh - ((anh tang) or (nhanh quang)) cua nhung cong tan toan cau*.