Perhaps you should try some spelling variations:
tham luu » tam luu, thanh luu, cham cuu
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
luu van » cuu van, luan van, luu hanh
van anh » van thanh, tuan anh, van minh
anh vai » anh va, anh bai, anh van
vai cua » dai cua, hai cua, lai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang xa hoi. ((hieu va) or (lieu va)) tham luu van anh vai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang xa hoi. ((hieu va) OR (lieu va)) tham luu van anh vai cua vat.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang xa hoi. ((hieu va) or (lieu va)) tham luu van anh vai cua vat*.