Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hanh vai » hanh vi, hanh va, hanh tai
tu cham » toc cham, thi cham
vai cua » dai cua, hai cua, lai cua
vu kham » vu khanh
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
co hoi » co loi
cua te » cua tu
lo va » lo van, lao va, ly va

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 y nang ((co hoi) OR (co hoc)). hieu ((vu kham) or (tu cham)) lo va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y nang ((co hoi) OR (co hoc)). hieu ((vu kham) OR (tu cham)) lo va hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y nang ((co hoi) OR (co hoc)). hieu ((vu kham) or (tu cham)) lo va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y nang ((co hoi) OR (co hoc)). hieu ((vu kham) or (tu cham)) lo va hanh vai cua te*.