Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
nang tai » hang tai, tang tai, sang tai
cham luc » cham soc, cham cuu, chat lua
nhan luc » nang luc
vu sach » vu bach, su sach, vu khach
tai hoi » tai khoi, dai hoi, tai hai
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
cua tre » cuu tre, cua triet, dua tren
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: vu sach ky nang tai hoi. hieu va ((cham luc) OR (nhan luc)) gia thanh lai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang tai hoi. hieu va ((cham luc) OR (nhan luc)) gia thanh lai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang tai hoi. hieu va ((cham luc) OR (nhan luc)) gia thanh lai ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang tai hoi. hieu va ((cham luc) OR (nhan luc)) gia thanh lai ((cua tre) or (cua te))*.