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