Perhaps you should try some spelling variations:
thanh dung » thanh duong, thanh tung, thanh hung
luan nhung » luan chung, luan hung, quan nhung
nhung cong » dung cong, thong cong, hang cong
bien tinh » bi tinh, yen tinh, diep tinh
cong lang » cong vang, cong luong, cong quang
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban
so bien » mot bien

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

• Performing a fuzzy search may retrieve terms with similar spellings: so bien tinh - thanh dung luan nhung cong lang ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so bien tinh - thanh dung luan nhung cong lang ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: so bien tinh - thanh dung luan nhung cong lang ((toan tai) or (toan ban))*.