Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu sang » chieu sach, chieu xanh, hieu lang
thanh phan » thanh pho, thanh san, thanh toan
hanh mang » nhanh mang, hanh trang, nhanh lang
tan thanh » tran thanh, tang thanh, toan thanh
hieu van » hieu va, thien van, lieu va
va thong » va thuong, va phuong, he thong
cong tan » cong tac, cong san, cong thanh
mang va » mang vua, hang va, bang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((hieu van) or (chieu sang)) - hanh mang va thong cong tan thanh phan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((hieu van) OR (chieu sang)) - hanh mang va thong cong tan thanh phan*.