Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
xuc gia » duc gia, luc gia, tuc gia
cua cau » cua cac, cua chu, cua cay
ve cam » ve cham, ve cac, va cam
cua su » qua su

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ((x ho) OR (xa hoi)). hieu ve cam xuc gia thanh san ((cua su) OR (cua cau))~.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ((x ho) or (xa hoi)). hieu ve cam xuc gia thanh san ((cua su) or (cua cau))*.