Perhaps you should try some spelling variations:
thien hieu » thien nhien, thien chien, thien hue
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
manh cua » doanh cua
ban cua » ban quan
tan van » tran van, tang van, luan van
dao van » do van, dang van

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

• Performing a fuzzy search may retrieve terms with similar spellings: thien hieu lang - hanh ((manh cua) OR (ban cua)) nhung cong ((tan van) or (dao van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thien hieu lang - hanh ((manh cua) OR (ban cua)) nhung cong ((tan van) OR (dao van)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thien hieu lang - hanh ((manh cua) OR (ban cua)) nhung cong ((tan van) or (dao van)) ban".
• Adding a wildcard symbol may retrieve word variants: thien hieu lang - hanh ((manh cua) OR (ban cua)) nhung cong ((tan van) or (dao van)) ban*.