Perhaps you should try some spelling variations:
thuong bai » thuong mai, thong bai, nhung bai
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
ho chieu » theo chieu, hoc thieu, mot chieu
bai toan » bai tap
toan ban » van ban
cua va » cua vat, chua va, cua van

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 (doi chieu)) xanh - canh tranh cua va thuong bai toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - canh tranh cua va thuong bai toan ban.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) xanh - canh tranh cua va thuong bai toan ban*.