Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
thuc gia » thuc giai, thue gia, thuc dia
thanh vi » hanh vi, thanh va, thanh ve
su triet » su tien, ve triet
bo sach » co sach, hoc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cach » va cac
cua tre » cua te, cuu tre, cua triet
su viet » so viet
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach y nang xa hoi. hieu va cach thuc gia thanh vi ((cua tre) or (((su triet) OR (su viet))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach y nang xa hoi. hieu va cach thuc gia thanh vi ((cua tre) OR (((su triet) OR (su viet)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach y nang xa hoi. hieu va cach thuc gia thanh vi ((cua tre) or (((su triet) OR (su viet))))".
• Adding a wildcard symbol may retrieve word variants: bo sach y nang xa hoi. hieu va cach thuc gia thanh vi ((cua tre) or (((su triet) OR (su viet))))*.