Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nhan luc » nang luc
cham luc » cham soc, cham cuu, chat lua
hieu ve » hieu va, hieu van
ty hang » ly hang, ty xang, thi hang
ty nang » ky nang, ty xang, ly nang
cuu tre » cua tre, cau tren, cau treo
va dan » ca dan, va dao, va dau
dan va » doan va, dan ca, ban va
va cuu » va cau, va chu, va huu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((ty nang) or (ty hang)) xa hoi. hieu ve ((cham luc) or (nhan luc)) va dan va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ty nang) OR (ty hang)) xa hoi. hieu ve ((cham luc) OR (nhan luc)) va dan va cuu tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ((ty nang) or (ty hang)) xa hoi. hieu ve ((cham luc) or (nhan luc)) va dan va cuu tre*.