Perhaps you should try some spelling variations:
danh dien » dinh dien, danh kien, danh lien
cam thuc » am thuc, nam thuc, cam thu
so sach » so sanh, bo sach, co sach
va danh » va dinh, va dan, va hanh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
cuc te » cuc thue, cuc tieu
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: so sach y nang xa hoi. ((hieu ve) or (hieu va)) cam thuc va danh dien ((cuc te) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang xa hoi. ((hieu ve) OR (hieu va)) cam thuc va danh dien ((cuc te) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y nang xa hoi. ((hieu ve) or (hieu va)) cam thuc va danh dien ((cuc te) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: so sach y nang xa hoi. ((hieu ve) or (hieu va)) cam thuc va danh dien ((cuc te) OR (cua te))*.