Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
nhan dong » nhanh dong, nhan dang, phan dong
phan hong » phan cong, pham hong, phan song
ban cong » bang cong, van cong, phan cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van 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 xanh - ((nhan dong) or (phan hong)) cua ban cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((nhan dong) OR (phan hong)) cua ban cong dan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((nhan dong) or (phan hong)) cua ban cong dan toan ban*.