Perhaps you should try some spelling variations:
tcanh tranh » thanh thanh, can tranh, lanh tranh
thong thanh » phong thanh, thong than, trong thanh
thanh toan » thanh hoa, thanh san, tinh toan
hieu lang » chieu sang, hieu quang, nhieu tang
va phuong » va thuong, cac phuong
va thong » va thuong, he thong, va cong
toan tap » toan ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - ((tcanh tranh) or (canh tranh)) ((va thong) OR (va phuong)) thong thanh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((tcanh tranh) OR (canh tranh)) ((va thong) OR (va phuong)) thong thanh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((tcanh tranh) or (canh tranh)) ((va thong) OR (va phuong)) thong thanh toan tap".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((tcanh tranh) or (canh tranh)) ((va thong) OR (va phuong)) thong thanh toan tap*.