Perhaps you should try some spelling variations:
hoc thieu » toc thieu
hanh tang » hanh trang, anh tang, hanh mang
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
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: ((hoc thieu) or (hoc hien)) xanh - hanh tang ((cua dung) or (qua dung)) cong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) xanh - hanh tang ((cua dung) OR (qua dung)) cong dan than cap.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) xanh - hanh tang ((cua dung) or (qua dung)) cong dan than cap*.