Perhaps you should try some spelling variations:
thanh nhan » thanh phan, thanh san, thanh toan
thu sach » tu sach, thuat sach, thuoc sach
nhan cua » nhat cua, nhan luc, nhan su
va thanh » gia thanh, ban thanh, va tinh
sach ky » sac ky, sach y, sach ty
vu kham » vu khanh
vu cham » va cham, tu cham, qua cham
mai hoi » mai khoi, dai hoi, lai hoi
cua tre » cua te, cuu tre, cua triet
ma hoi » xa hoi, ma hoa, me hoi
lo va » lo van, lao va, ly va

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 ky nang ((ma hoi) or (mai hoi)). hieu ((vu cham) OR (vu kham)) lo va thanh nhan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang ((ma hoi) OR (mai hoi)). hieu ((vu cham) OR (vu kham)) lo va thanh nhan cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang ((ma hoi) or (mai hoi)). hieu ((vu cham) OR (vu kham)) lo va thanh nhan cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang ((ma hoi) or (mai hoi)). hieu ((vu cham) OR (vu kham)) lo va thanh nhan cua tre*.