Perhaps you should try some spelling variations:
thien van » thi van
doc sach » hoc sach, toc sach, nuoc sach
cham tuc » nham thuc, pham thuc, tham thuc
tam thuc » tham thuc, am thuc, nam thuc
kinh dat » dinh dat, kinh dao, chinh dat
nang xa » nang x, lang xa, nang ma
va kinh » va tinh, qua kinh
dat cua » dai cua, day cua, mat cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. thien van ((cham tuc) or (tam thuc)) va kinh dat cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach y nang xa hoi. thien van ((cham tuc) OR (tam thuc)) va kinh dat cua tre.
• Adding a wildcard symbol may retrieve word variants: doc sach y nang xa hoi. thien van ((cham tuc) or (tam thuc)) va kinh dat cua tre*.