Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
thanh tinh » thanh binh, nhanh tinh, than kinh
nhung cong » dung cong, thong cong, hang cong
hanh tinh » hanh trinh, nhanh tinh, canh tinh
cua nhung » va nhung
dan chan » dan gian, dan ca, van chat
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien nhanh - ((hanh tinh) or (thanh tinh)) cua nhung cong ((dan chan) or (van toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - ((hanh tinh) OR (thanh tinh)) cua nhung cong ((dan chan) OR (van toan)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - ((hanh tinh) or (thanh tinh)) cua nhung cong ((dan chan) or (van toan)) ban*.