Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
toc sach » hoc sach, doc sach, thuoc sach
hanh doi » hanh noi, hang doi, hanh moi
thuc va » thuc vat, thuc dan, thuc day
cuu tre » cua tre, cau tren, cau treo
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
sach v » sach va, sach y, sach 2
ma hoi » mai hoi, xa hoi, ma hoa
v nang » va nang, vu nang, van nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach v nang ma hoi. ((hieu ve) or (lieu va)) am thuc va ((hanh doi) or (thanh doi)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach v nang ma hoi. ((hieu ve) OR (lieu va)) am thuc va ((hanh doi) OR (thanh doi)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: toc sach v nang ma hoi. ((hieu ve) or (lieu va)) am thuc va ((hanh doi) or (thanh doi)) cuu tre*.