Perhaps you should try some spelling variations:
hanh truong » hanh trong, anh truong, manh truong
truong cao » truong dai
nhung cong » thong cong, hang cong, nhung don
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
hoc hieu » hoc thieu, hoc hien, doc hieu
anh nhan » danh nhan, doanh nhan, thanh nhan
nhan ban » nhuan ban, nhat ban, nhan dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - hanh truong cao ((nhung cong) or (dung cong)) anh nhan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - hanh truong cao ((nhung cong) OR (dung cong)) anh nhan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - hanh truong cao ((nhung cong) or (dung cong)) anh nhan ban*.