Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
ho chieu » theo chieu, doi chieu, mot chieu
cua tong » cua cong, cua nong, cua song
cua dong » chua dong, cua cong, cua dang
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than cap » khan cap, thanh lap, thanh cac

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 (hoc thieu)) xanh - canh manh ((cua tong) or (cua dong)) cong ban than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - canh manh ((cua tong) OR (cua dong)) cong ban than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) xanh - canh manh ((cua tong) or (cua dong)) cong ban than cap".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) xanh - canh manh ((cua tong) or (cua dong)) cong ban than cap*.