Perhaps you should try some spelling variations:
than cua » nhan cua, ban cua, gian cua
thai cua » tai cuc, tri cua, dai cua
tu sach » thu sach, su sach, te sach
qua van » quan van, qua ban, qua san
sach ky » sac ky, sach y, sach ty
hieu ca » hieu cac, hieu cua, hieu va
qua va » quan va, vua va, qua ca
ca nam » cua nam, cai nam, ha nam
x hoi » xa hoi, o hoi, x ho

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 nang x hoi. hieu ca nam ((qua va) OR (qua van)) han ((thai cua) or (than cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu ca nam ((qua va) OR (qua van)) han ((thai cua) OR (than cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu ca nam ((qua va) OR (qua van)) han ((thai cua) or (than cua)) tre*".