Perhaps you should try some spelling variations:
canh thanh » canh tranh, danh thanh, nhanh thanh
thong cong » trong cong, tong cong, thong thong
cong thanh » dong thanh, cong trinh, cong tan
thanh hang » thanh hoang, thanh thang, tranh hang
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
anh thanh » danh thanh, nhanh thanh, thanh thanh
va thong » va thuong, va phuong, he thong
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) OR (anh thanh)) va thong 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) OR (anh thanh)) va thong 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) OR (anh thanh)) va thong cong thanh hang dau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (hoc thieu)) xanh - ((canh thanh) OR (anh thanh)) va thong cong thanh hang dau*.