Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
xuc van » duc van, luc van, vuc van
va bao » va bai
vi cua » vai cua, di cua

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 ma hoa. hieu ((va cac) or (va bao)) xuc van hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang ma hoa. hieu ((va cac) OR (va bao)) xuc van hanh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang ma hoa. hieu ((va cac) or (va bao)) xuc van hanh vi cua vat*.