Perhaps you should try some spelling variations:
hanh thang » nhanh thang, thanh thang, hanh trang
hieu lang » chieu sang, hieu quang, nhieu tang
nha hieu » nha dieu, nghe hieu, phan hieu
he trong » he trung, le trong, ke trong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: nha hieu lang - hanh thang ((he thong) or (he trong)) cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nha hieu lang - hanh thang ((he thong) OR (he trong)) cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: nha hieu lang - hanh thang ((he thong) or (he trong)) cong dan toan cao*.