Perhaps you should try some spelling variations:
nhan luc » nang luc
tu sach » thu sach, su sach, tu cach
te sach » toc sach
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
luc van » luoc van, luu van, duc van
anh ve » hanh ve, anh viet, thanh ve
anh va » hanh va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (te sach)) ky nang x hoi. hieu va nhan luc van ((anh ve) OR (anh va)) cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang x hoi. hieu va nhan luc van ((anh ve) OR (anh va)) cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky nang x hoi. hieu va nhan luc van ((anh ve) OR (anh va)) cua vat".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky nang x hoi. hieu va nhan luc van ((anh ve) OR (anh va)) cua vat*.