Perhaps you should try some spelling variations:
thien van » thi van
toc sach » hoc sach, doc sach, thuoc sach
van cham » van chat, van tham, va cham
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
truc va » thuc vat, trung va
thuc va » thuc vat, thuc dan, thuc day
van cuu » van cau, van chu, van cu
cuu tre » cua tre, cau tren, cau treo

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 ky nang xa hoi. thien van cham ((truc va) OR (thuc va)) dinh van cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang xa hoi. thien van cham ((truc va) OR (thuc va)) dinh van cuu tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang xa hoi. thien van cham ((truc va) OR (thuc va)) dinh van cuu tre*.