Perhaps you should try some spelling variations:
thien van » thi van
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc anh
van chat » cao chat
chat tuc » chat xuc, luat tuc, chat huu
dich dau » dich dao, tich dau, dich vu
hoc cac » hoc cao
nang xa » nang x, lang xa, nang ma
tuc van » thuc van, truc van, tuc va
dau cua » dai cua, day cua, cau cua
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) or (((hoc sach) or (hoc cac)))) ky nang xa hoi. thien van chat tuc van dich dau cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (((hoc sach) OR (hoc cac)))) ky nang xa hoi. thien van chat tuc van dich dau cua tre.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (((hoc sach) or (hoc cac)))) ky nang xa hoi. thien van chat tuc van dich dau cua tre*.