Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh tranh » canh tranh, hanh trang, lanh tranh
hang cong » dang cong, hang nong, bang cong
doc hieu » toc thieu, hoc thieu
cua hang » cua dang, cua nhung, cua cong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc hien) or (doc hieu)) xanh - ((hanh tranh) or (hanh trinh)) cua hang cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (doc hieu)) xanh - ((hanh tranh) OR (hanh trinh)) cua hang cong dan than cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (doc hieu)) xanh - ((hanh tranh) or (hanh trinh)) cua hang cong dan than cao*.