Perhaps you should try some spelling variations:
hang doanh » hanh doanh, nhung doanh, van doanh
doanh luan » doanh nhan
luan nhung » luan chung, luan hung, quan nhung
nhung cong » dung cong, thong cong, hang cong
mot chieu » doi chieu
ho chieu » theo chieu, hoc thieu, doi chieu
bai toan » bai tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (mot chieu)) xanh - hang doanh luan nhung cong ((tan tran) or (bai toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (mot chieu)) xanh - hang doanh luan nhung cong ((tan tran) OR (bai toan)) cao.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (mot chieu)) xanh - hang doanh luan nhung cong ((tan tran) or (bai toan)) cao*.