Perhaps you should try some spelling variations:
cua thuong » cua truong, cua phuong, ca thuong
hieu lang » chieu sang, hieu quang, nhieu tang
cua thong » cua khong, cua tong, suat thong
thong dan » thong van, tuong dan, thong den
xuong dan » huong dan, xuong san, tuong dan
hoi hieu » hoi phieu, hoi tieu, moi hieu
phan dau » phan tu, hang dau

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

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