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
toi cua » troi cua, tri cua, hoi cua
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
va dan » ca dan, va dao, va dap
va dau » va dao
cham o » cham soc

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) OR (va dau)) 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) OR (va dau)) toi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang xa hoi. hieu van ((cham loc) or (cham o)) ((va dan) OR (va dau)) toi cua tre*".