Perhaps you should try some spelling variations:
sang tao » hang tai
hanh lam » thanh lap, hanh kem, hanh va
nhan luc » nang luc
tu sach » thu sach, su sach, te sach
cua tre » cuu tre, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
tao hoi » tao khoi, tao boi, tay hoi
ky sang » ky nang, ky dang, ky tang
luc va » duc va, tuc va, loc va
cua te » cua tu

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