Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
dia thanh » gia thanh, da thanh, dinh thanh
thanh vi » hanh vi, thanh va, thanh ve
thuc dia » thuc dieu, thuat dia, thuc giai
su triet » su viet, su tien, ve triet
hieu va » lieu va, hieu qua
va cach » va cac
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, cua triet
bo sach » co sach, hoc sach
y nang » ky nang, v nang, may 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) OR (ly nang)) xa hoi. hieu va cach thuc dia thanh vi ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ((y nang) OR (ly nang)) xa hoi. hieu va cach thuc dia thanh vi ((cua tre) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach ((y nang) OR (ly nang)) xa hoi. hieu va cach thuc dia thanh vi ((cua tre) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: bo sach ((y nang) OR (ly nang)) xa hoi. hieu va cach thuc dia thanh vi ((cua tre) or (su triet))*.