Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
tang cua » mang cua, hang cua, tang luan
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) or (doi chieu)) sach - hanh ((tang cua) or (tranh cua)) nhung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doi chieu)) sach - hanh ((tang cua) OR (tranh cua)) nhung cong tan toan cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doi chieu)) sach - hanh ((tang cua) or (tranh cua)) nhung cong tan toan cau*.