Perhaps you should try some spelling variations:
doc sach » hoc sach, toc sach, nuoc sach
cam thuc » am thuc, nam thuc, cam thu
nang xa » nang x, lang xa, nang ma
qua cam » qua cham, qua cac, qua ca
thuc va » thuc vat, thuc dan, thuc day
danh di » danh du, xanh di, danh dien
cua tuc » cua duc, cua tu, cua thuoc
y nang » ky nang, ly nang, v nang
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach y nang xa hoi. hieu qua cam thuc va ((danh di) or (hanh kem)) ((cua te) or (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach y nang xa hoi. hieu qua cam thuc va ((danh di) OR (hanh kem)) ((cua te) OR (cua tuc)).
• Adding a wildcard symbol may retrieve word variants: doc sach y nang xa hoi. hieu qua cam thuc va ((danh di) or (hanh kem)) ((cua te) or (cua tuc))*.