Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
canh trang » canh tranh, hanh trang, banh trang
bang cong » dang cong, bang song, hang cong
trang va » tran van, hang va
dan toan » van toan, dan than, manh toan
dan chan » dan gian, dan ca, van chat
va bang » va nang, va lang, va ban

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 - canh trang va bang cong ((dan toan) or (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - canh trang va bang cong ((dan toan) OR (dan chan)) cau*.