Perhaps you should try some spelling variations:
thien van » thi van
pham thuc » phap thuc, pham chuc, nham thuc
doc sach » hoc sach, toc sach, nuoc sach
van pham » san pham, van phan, van phat
dinh dai » dinh dat, sinh dai, dinh dao
cau tren » cu tren, dau tren, ca tren
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
va dinh » van dinh, va kinh, va tinh
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: doc sach ky nang xa hoi. thien van pham thuc va dinh dai ((cua tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach ky nang xa hoi. thien van pham thuc va dinh dai ((cua tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: doc sach ky nang xa hoi. thien van pham thuc va dinh dai ((cua tre) or (cau tren))*.