Perhaps you should try some spelling variations:
thong danh » thong dan, thong lanh, thong thanh
trong danh » trong doanh, truong danh, trong anh
hieu quan » hieu qua, lieu quan, thien quan
trung va » truong va, trung ha, trung tam
trang va » tran van, hang va
toan cau » toan cao, toan ban, toan tap
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 quan - hanh ((trung va) or (trang va)) thong ((thong danh) or (trong danh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu quan - hanh ((trung va) OR (trang va)) thong ((thong danh) OR (trong danh)) toan cau.
• Adding a wildcard symbol may retrieve word variants: ho hieu quan - hanh ((trung va) or (trang va)) thong ((thong danh) or (trong danh)) toan cau*.