Perhaps you should try some spelling variations:
nang hai » hang hai, nang tai, dang hai
te sach » toc sach
hieu ve » hieu va, hieu van
ve giao » te giao, viet giao, van giao
va nang » van nang, da nang, cam nang
hai cua » thai cua, dai cua, hoi cua
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, me hoi
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ((ma hoi) or (ma hoa)). hieu ve giao duc va nang hai cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((ma hoi) OR (ma hoa)). hieu ve giao duc va nang hai cua su.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((ma hoi) or (ma hoa)). hieu ve giao duc va nang hai cua su*.