Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
ty nang » ky nang, ty hang, ly nang
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
ve cam » ve cham, ve cac, ve cai
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: toc sach ((ty nang) OR (ty xang)) x hoi. hieu ((ve cam) or (va cam)) luc va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ty nang) OR (ty xang)) x hoi. hieu ((ve cam) OR (va cam)) luc va hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((ty nang) OR (ty xang)) x hoi. hieu ((ve cam) or (va cam)) luc va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ((ty nang) OR (ty xang)) x hoi. hieu ((ve cam) or (va cam)) luc va hanh vai cua te*.