Perhaps you should try some spelling variations:
dang thanh » dong thanh, dang hanh, hoang thanh
hoc thieu » toc thieu, hoc hien
doi chieu » doc hieu, doi chi, ho chieu
lang cong » dang cong, bang cong, hang cong
cong dang » cong dong, cong dan, cong dung
thanh tap » thanh lap, thanh tai, thanh tay
tranh va » tranh van, trang va, trinh va
va lang » va nang, hoa 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 thieu) or (doi chieu)) xanh - canh tranh va lang cong dang thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doi chieu)) xanh - canh tranh va lang cong dang thanh tap.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doi chieu)) xanh - canh tranh va lang cong dang thanh tap*.