Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
hoc hang » hoc hanh, hoc bang, hoc han
hoc tang » hoc bang, hoc tan, hoc tieng
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (nhieu tang)) - hanh trang ((hoc hang) or (hoc tang)) cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (nhieu tang)) - hanh trang ((hoc hang) OR (hoc tang)) cong dan toan tap.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (nhieu tang)) - hanh trang ((hoc hang) or (hoc tang)) cong dan toan tap*.