Perhaps you should try some spelling variations:
canh thanh » canh tranh, danh thanh, anh thanh
thong cong » trong cong, thong thong, phong chong
thanh hang » thanh hoang, thanh thang, tranh hang
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
tong cong » trong cong, cong cong, dung cong
thanh va » thanh van, hanh va, thanh ha
hang dau » hang va, hang tai

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