Perhaps you should try some spelling variations:
nguong dan » huong dan
tien manh » tien anh, tien thanh, tieng anh
hoc tien » hoc tieng, hoc hien, hoc vien
huong va » thuong va, luong va, duong va
cong san » cong tac
phan cac » nhan cach, phan dau, phan lap
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc tien manh - anh huong va nang ((nguong dan) or (cong san)) phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tien manh - anh huong va nang ((nguong dan) OR (cong san)) phan cac.
• Adding a wildcard symbol may retrieve word variants: hoc tien manh - anh huong va nang ((nguong dan) or (cong san)) phan cac*.