Perhaps you should try some spelling variations:
nhieu tang » chieu sang, hieu lang, nhiet nang
chieu sach » chinh sach, chieu sang, chieu xanh
manh tran » manh toan, manh tuan, canh tranh
tran tuan » tran xuan, tran quang, tran thanh
tuan dung » tuan duong, tran dung, tan dung
dung cong » dung trong
cong tap » cuong tap, cong tac, cong tan
tap doan » tap quan
doan cau » toan cau, doan dau, doan cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((nhieu tang) or (((chiet tach) OR (chieu sach)))) - manh tran tuan dung cong tap doan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((nhieu tang) OR (((chiet tach) OR (chieu sach)))) - manh tran tuan dung cong tap doan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((nhieu tang) or (((chiet tach) OR (chieu sach)))) - manh tran tuan dung cong tap doan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((nhieu tang) or (((chiet tach) OR (chieu sach)))) - manh tran tuan dung cong tap doan cau*.