Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
hanh tang » hanh trang, anh tang, hanh mang
hang cong » dang cong, hang nong, bang cong
hoc dieu » hoc hien
tang van » dang van, hoang van, trong van
van hang » van khang, van hoang, van thang
cong tac » cong ty
chan cau » phan cau, can cau, chinh cau
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc dieu) or (hoc thieu)) xanh - hanh tang van hang cong tac ((chan cau) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc dieu) OR (hoc thieu)) xanh - hanh tang van hang cong tac ((chan cau) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: ((hoc dieu) or (hoc thieu)) xanh - hanh tang van hang cong tac ((chan cau) or (phan dau))*.