Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
chieu sang » chieu sach, chieu xanh, hieu lang
trung chan » trung phan, trong chan, trung can
hieu manh » chieu xanh, hieu nganh, dieu hanh
chan dung » van dung, dan dung
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
hang dau » hang va, hang tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (chieu sang)) - hanh trung chan dung ((cong dan) or (cong tan)) hang dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu sang)) - hanh trung chan dung ((cong dan) OR (cong tan)) hang dau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu sang)) - hanh trung chan dung ((cong dan) or (cong tan)) hang dau*.