Perhaps you should try some spelling variations:
nhanh mang » nhanh lang, hanh mang, nhanh quang
thong cong » trong cong, tong cong, thong thong
hieu tinh » chieu tinh, kieu tinh, hieu binh
lieu tinh » trieu tinh, diep tinh, bien tinh
tan thanh » tran thanh, tang thanh, toan thanh
va thong » va thuong, va phuong, he thong
cong tan » cong tac, cong san, cong thanh
thanh ca » thanh cha, thanh cac, thanh ha
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: doc ((hieu tinh) or (lieu tinh)) - nhanh mang va thong cong tan thanh ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu tinh) OR (lieu tinh)) - nhanh mang va thong cong tan thanh ca*.