Perhaps you should try some spelling variations:
thien van » thi van
pham thuc » phap thuc, pham chuc, nham thuc
toc sach » hoc sach, doc sach, thuoc sach
van pham » san pham, van phan, van phat
dinh dai » dinh dat, dinh dao, dinh tai
sinh dai » sinh thai, sinh vat, sinh li
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet

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 pham thuc va ((dinh dai) or (((sinh dai) OR (si dai)))) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang xa hoi. thien van pham thuc va ((dinh dai) OR (((sinh dai) OR (si dai)))) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang xa hoi. thien van pham thuc va ((dinh dai) or (((sinh dai) OR (si dai)))) cua tre*".