Perhaps you should try some spelling variations:
nhieu tang » chieu sang, nhiet nang
quan trong » gian trong
hieu lang » chieu sang, hieu quang, hieu van
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van 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: he ((hieu lang) OR (nhieu tang)) - ((hanh tang) or (hanh mang)) quan trong cong tan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: he ((hieu lang) OR (nhieu tang)) - ((hanh tang) OR (hanh mang)) quan trong cong tan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "he ((hieu lang) OR (nhieu tang)) - ((hanh tang) or (hanh mang)) quan trong cong tan toan tap".
• Adding a wildcard symbol may retrieve word variants: he ((hieu lang) OR (nhieu tang)) - ((hanh tang) or (hanh mang)) quan trong cong tan toan tap*.