Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
cua hang » cua dang, cua nhung, cua cong
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat
van phan » van phong, van thanh, luan phan

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 tranh cua hang cong ((((dan than) or (dan chan))) or (van phan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - hanh tranh cua hang cong ((((dan than) OR (dan chan))) OR (van phan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - hanh tranh cua hang cong ((((dan than) or (dan chan))) or (van phan)) cau*.