Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
toc hieu » toc thieu, doc hieu, hoc thieu
tang van » dang van, hoang van, trong van
van dung » van dong, xay dung, tin dung
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan cac, phan tu
than cap » khan cap, thanh lap, thanh cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu nganh - hanh tang van dung cong dan ((((phan cau) or (dung tai))) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu nganh - hanh tang van dung cong dan ((((phan cau) OR (dung tai))) OR (than cap)).
• Adding a wildcard symbol may retrieve word variants: toc hieu nganh - hanh tang van dung cong dan ((((phan cau) or (dung tai))) or (than cap))*.