Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cham loc » cham soc, chon loc, hau loc
te sach » toc sach
nang xa » nang x, lang xa, nang ma
dan toi » dan toc, dan thi, van toi
toi cua » troi cua, tri cua, hoi cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
cham o » cham soc
va dan » ca dan, va dao, va dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang xa hoi. hieu van ((cham loc) or (cham o)) va dan toi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. hieu van ((cham loc) OR (cham o)) va dan toi cua tre*.