Perhaps you should try some spelling variations:
dinh dat » dinh ket, dinh van, dinh lam
dinh dai » sinh dai, dinh dao, dinh tai
chat tuc » chat xuc, luat tuc, chat huu
hieu van » hieu va, thien van, lieu va
van chat » cao chat
nang xa » nang x, lang xa, nang ma
sach ky » sac ky, sach y, sach kem
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ky) OR (sach ty)) nang xa hoi. hieu van chat tuc va ((dinh dai) or (dinh dat)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sach ty)) nang xa hoi. hieu van chat tuc va ((dinh dai) OR (dinh dat)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) OR (sach ty)) nang xa hoi. hieu van chat tuc va ((dinh dai) or (dinh dat)) cua tre*".