Perhaps you should try some spelling variations:
hanh trinh » canh tranh
bang thanh » ban thanh, dang thanh, tang thanh
doi chieu » doc hieu, doi chi, ho chieu
toan dung » tran dung, tan dung, toan ung
dung cong » dung trong
cong bang » cuong bang, dong bang, hong bang
thanh ban » thanh san, thanh van, thanh bac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (hoc hien)) xanh - ((hanh trinh) or (hanh chinh)) toan dung cong bang thanh ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc hien)) xanh - ((hanh trinh) OR (hanh chinh)) toan dung cong bang thanh ban.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (hoc hien)) xanh - ((hanh trinh) or (hanh chinh)) toan dung cong bang thanh ban*.