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
dinh day » dinh dat, dinh dao, dinh da
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
truc va » thuc va, thuc vat, trung va
day cua » dai cua
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, tuc xa, duc va

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