Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
day thanh » dao thanh, dat thanh, da thanh
hoc sach » hoc sinh, hoc cac, hoc anh
thanh vi » hanh vi, thanh va, thanh ve
thuc day » thuc dan, thuc vat
cau thuc » cau truc, cuu thuc, can thuc
hieu va » lieu va, hieu qua
hieu ve » hieu van
vi cua » vai cua, di cua
y nang » ky nang, ly nang, v nang
cua te » cua tu
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: ((thuoc sach) or (hoc sach)) y nang x hoi. ((hieu ve) or (hieu va)) cau thuc day thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) y nang x hoi. ((hieu ve) OR (hieu va)) cau thuc day thanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (hoc sach)) y nang x hoi. ((hieu ve) or (hieu va)) cau thuc day thanh vi cua te*.