Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
chat thuc » thuat thuc, nhan thuc, chat thai
sach kem » hanh kem
hieu cao » chieu cao, hieu cac, hieu ca
sinh dai » sinh thai, si dai, sinh vat
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
va sinh » va kinh, va tinh, vi sinh
cua tre » cua te, cuu tre, dua tren
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 kem) or (sac ky)) nang xa hoi. hieu cao chat thuc va sinh dai ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach kem) OR (sac ky)) nang xa hoi. hieu cao chat thuc va sinh dai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach kem) or (sac ky)) nang xa hoi. hieu cao chat thuc va sinh dai ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: thu ((sach kem) or (sac ky)) nang xa hoi. hieu cao chat thuc va sinh dai ((cua tre) OR (cua triet))*.