Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu lang » chieu sang, hieu quang, nhieu tang
doi hieu » doi chieu, doc hieu, doi hien
va tuong » va thuong, xa truong, va phuong
va thong » va thuong, va phuong, he thong
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - thanh trung ((va tuong) or (va thong)) cong dan ((phan cau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - thanh trung ((va tuong) OR (va thong)) cong dan ((phan cau) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - thanh trung ((va tuong) or (va thong)) cong dan ((phan cau) or (phan cac))*.