Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
can thuc » dan thuc, van thuc, cay thuc
thanh vi » thanh va, thanh ve, nhanh vi
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
so sach » so sanh, bo sach, co sach
va can » va chan, va cac, va cao

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 ky nang xa hoi. hieu va can thuc va ((thanh vi) or (hanh vi)) ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang xa hoi. hieu va can thuc va ((thanh vi) OR (hanh vi)) ((cua triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang xa hoi. hieu va can thuc va ((thanh vi) or (hanh vi)) ((cua triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang xa hoi. hieu va can thuc va ((thanh vi) or (hanh vi)) ((cua triet) OR (su triet))*.