Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
hanh tranh » hanh trinh, hanh trang, lanh tranh
hien xanh » hien hanh, hien nhanh, chieu xanh
huong ban » huong dan, huong ben, huong lan
ban than » ban thanh, van thanh, ban hang
than ban » thanh ban, toan ban, than man

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 xanh - ((hanh tranh) or (canh tranh)) va nhung huong ban than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((hanh tranh) OR (canh tranh)) va nhung huong ban than ban*.