Perhaps you should try some spelling variations:
hanh truong » hanh trong, anh truong, manh truong
thieu quang » hieu quang, thien quan, trien quang
truong cao » truong dai
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
cao nhung » cho nhung, cam nhung, cao chung
cong san » cong tac
san toan » van toan, dan toan, 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: hoi ((hieu lang) or (thieu quang)) - hanh truong cao nhung cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi ((hieu lang) OR (thieu quang)) - hanh truong cao nhung cong san toan cao.
• Adding a wildcard symbol may retrieve word variants: hoi ((hieu lang) or (thieu quang)) - hanh truong cao nhung cong san toan cao*.