Perhaps you should try some spelling variations:
tieng trung » truong trung
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
tang luan » dung luan
tang cua » mang cua, hang cua, thong cua
ban than » ban thanh, van thanh, ban hang
than cau » toan cau, phan cau, than cap
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 - hanh ((tang cua) OR (tang luan)) ((nhung cong) or (tieng trung)) ban than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh ((tang cua) OR (tang luan)) ((nhung cong) OR (tieng trung)) ban than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - hanh ((tang cua) OR (tang luan)) ((nhung cong) or (tieng trung)) ban than cau".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh ((tang cua) OR (tang luan)) ((nhung cong) or (tieng trung)) ban than cau*.