Perhaps you should try some spelling variations:
chat thuc » thuat thuc, nhan thuc, chat huu
hieu cao » chieu cao, hieu cac, hieu ca
dinh dai » dinh dat, sinh dai, dinh dao
nang xa » nang x, lang xa, nang ma
va dinh » van dinh, va kinh, va tinh
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky

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 y) or (sac ky)) nang xa hoi. hieu cao ((chat thuc) OR (chat thai)) va dinh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach y) OR (sac ky)) nang xa hoi. hieu cao ((chat thuc) OR (chat thai)) va dinh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach y) or (sac ky)) nang xa hoi. hieu cao ((chat thuc) OR (chat thai)) va dinh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach y) or (sac ky)) nang xa hoi. hieu cao ((chat thuc) OR (chat thai)) va dinh dai cua tre*.