Perhaps you should try some spelling variations:
hieu nang » lieu nang, hieu lang, sieu nang
thanh lap » thanh san, thanh hai, thanh van
phan lap » phan dau
te sach » toc sach
cao hoi » cau hoi, co hoi, cao hoc
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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 cao hoi. hieu nang giao duc van ((thanh lap) or (phan lap)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang cao hoi. hieu nang giao duc van ((thanh lap) OR (phan lap)) cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y nang cao hoi. hieu nang giao duc van ((thanh lap) or (phan lap)) cua tre*.