Perhaps you should try some spelling variations:
chiet tach » chieu sach
thanh tran » thanh trang, thanh toan, thanh tra
hieu lang » chieu sang, hieu quang, nhieu tang
tuan cong » thuan cong, luan cong, tran cong
manh toan » thanh toan, anh tuan
tran van » luan van
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chiet tach) or (hieu lang)) - thanh tran van tuan cong ((manh toan) OR (tinh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chiet tach) OR (hieu lang)) - thanh tran van tuan cong ((manh toan) OR (tinh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chiet tach) or (hieu lang)) - thanh tran van tuan cong ((manh toan) OR (tinh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chiet tach) or (hieu lang)) - thanh tran van tuan cong ((manh toan) OR (tinh toan)) cau*.