Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
sach ty » sach y, sach tu, xach tay
nang ma » tang ma, sang ma, nang cao
xuc van » duc van, luc van, vuc van
minh va » tinh va, sinh va, sinh vat
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa
qua ca » qua cac, qua cua, qua cai
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: tu ((sach ty) or (sach thu)) nang ma hoi. hieu qua ca ((xuc van) or (duc tan)) minh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) nang ma hoi. hieu qua ca ((xuc van) OR (duc tan)) minh va cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach thu)) nang ma hoi. hieu qua ca ((xuc van) or (duc tan)) minh va cuu tre*.