Perhaps you should try some spelling variations:
canh thanh » canh tranh, danh thanh, anh thanh
thong cong » tong cong, thong thong, phong chong
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
thanh van » thanh san, thanh toan, thanh phan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

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