Perhaps you should try some spelling variations:
quang thinh » quang thanh, quang chinh, quang ninh
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tran » thanh trang, thanh toan, thanh tra
thinh dang » chinh dang, thinh lang, binh dang
hieu manh » chieu xanh, hieu nganh, dieu hanh
dang tan » dang tran, dang toan, dang van
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu manh) or (chieu sang)) - thanh tran quang thinh dang tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu manh) OR (chieu sang)) - thanh tran quang thinh dang tan van ban.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu manh) or (chieu sang)) - thanh tran quang thinh dang tan van ban*.