Perhaps you should try some spelling variations:
cham loc » cham soc, chon loc, hau loc
hieu van » thien van, lieu va, hieu ve
hieu va » lieu va, hieu qua
te sach » toc sach
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
v nang » va nang, vu nang, van nang
sach v » sach va, sach y, sach 2
cham o » cham soc
va dan » ca dan, va dao, va dau
dan di » danh di, dan da, dan de
di cua » dai cua, doi cua, de cua

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 v nang xa hoi. ((hieu van) OR (hieu va)) ((cham loc) or (cham o)) va dan di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang xa hoi. ((hieu van) OR (hieu va)) ((cham loc) OR (cham o)) va dan di cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v nang xa hoi. ((hieu van) OR (hieu va)) ((cham loc) or (cham o)) va dan di cua tre*".