Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thanh tung » thanh cong
hien xanh » hien hanh, hien nhanh, chieu xanh
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
than cap » khan cap, thanh lap, thanh cac
va dang » van dang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - ((hanh trinh) or (thanh tung)) va dang ((cong ban) OR (cong san)) than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((hanh trinh) OR (thanh tung)) va dang ((cong ban) OR (cong san)) than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - ((hanh trinh) or (thanh tung)) va dang ((cong ban) OR (cong san)) than cap".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((hanh trinh) or (thanh tung)) va dang ((cong ban) OR (cong san)) than cap*.