Perhaps you should try some spelling variations:
cao thuc » cao thuoc, can thuc, cao thu
bao thuc » cao thuoc, am thuc, va thuc
te sach » toc sach
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, bai cua
lai cua » dai cua, hai cua, lai chau
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang x hoi. lieu va ((cao thuc) OR (bao thuc)) va hanh ((vai cua) or (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. lieu va ((cao thuc) OR (bao thuc)) va hanh ((vai cua) OR (lai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. lieu va ((cao thuc) OR (bao thuc)) va hanh ((vai cua) or (lai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. lieu va ((cao thuc) OR (bao thuc)) va hanh ((vai cua) or (lai cua)) tre*.