Perhaps you should try some spelling variations:
nhieu tang » chieu sang, hieu lang, nhiet nang
chieu sach » chinh sach, chiet tach, chieu sang
canh trinh » canh tranh, hanh trinh, canh tinh
trinh vi » trinh va, trinh ve, trinh viet
vi nhung » voi nhung, vai nhung, va nhung
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((nhieu tang) or (chieu sach)) - canh trinh vi nhung ((huong dan) or (cong tan)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((nhieu tang) OR (chieu sach)) - canh trinh vi nhung ((huong dan) OR (cong tan)) phan tu.
• Adding a wildcard symbol may retrieve word variants: ho ((nhieu tang) or (chieu sach)) - canh trinh vi nhung ((huong dan) or (cong tan)) phan tu*.