Perhaps you should try some spelling variations:
nhan luc » nang luc
hanh tai » thanh tai, hang tai, han tai
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
hieu va » lieu va
va hanh » van hanh, va thanh, va danh
tai cua » thai cua, tai cuc, tri cua
luc va » duc va, tuc va, loc va
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, 5 hoi

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 tu nang ((x hoi) OR (x ho)). ((hieu va) or (hieu qua)) nhan luc va hanh tai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nang ((x hoi) OR (x ho)). ((hieu va) OR (hieu qua)) nhan luc va hanh tai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nang ((x hoi) OR (x ho)). ((hieu va) or (hieu qua)) nhan luc va hanh tai cua tu".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang ((x hoi) OR (x ho)). ((hieu va) or (hieu qua)) nhan luc va hanh tai cua tu*.