Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh manh » hanh mang, lanh manh, hoang manh
cua nhung » va nhung
hoc hieu » hoc thieu, hoc hien, doc hieu
manh cua » doanh cua, ban cua
tan than » tan thanh, ban than, van than
tam than » ban than

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 manh cua nhung cong ((((tan than) or (tam than))) or (tan tran)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - hanh manh cua nhung cong ((((tan than) OR (tam than))) OR (tan tran)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - hanh manh cua nhung cong ((((tan than) or (tam than))) or (tan tran)) cau*.