Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, tu cach
te sach » toc sach
ly nang » ky nang, ly hang, ly vang
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua
ve cai » va cai, ve cac, ve tai
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: ((tu sach) or (te sach)) ly nang x hoi. hieu ((ve cai) or (va cam)) thuc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ly nang x hoi. hieu ((ve cai) OR (va cam)) thuc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ly nang x hoi. hieu ((ve cai) or (va cam)) thuc va hanh vi cua te*.