Perhaps you should try some spelling variations:
nhieu tang » nhiet nang
chieu sang » chieu sach, chieu xanh
thanh tung » thanh cong
hieu lang » hieu quang, hieu van, biet lang
dung cong » dung trong
tung hoc » trung hoc, tuong hoc, dung hoc
hoc dung » hoc ung, hoc dan, tac dung
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu lang) or (((nhieu tang) or (chieu sang)))) - thanh tung hoc dung cong tap toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (((nhieu tang) OR (chieu sang)))) - thanh tung hoc dung cong tap toan ban.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) or (((nhieu tang) or (chieu sang)))) - thanh tung hoc dung cong tap toan ban*.