Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
sinh y » sinh ly
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: hoc sinh y nang xa hoi. ((hieu ve) or (hieu van)) pham duc va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sinh y nang xa hoi. ((hieu ve) OR (hieu van)) pham duc va thanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc sinh y nang xa hoi. ((hieu ve) or (hieu van)) pham duc va thanh vai cua tre*.