Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
cao hoi » co hoi, cao hoc, tao hoi
sach ty » sach tu, sach thu, xach tay
hieu va » lieu va, hieu qua
va cham » va chat, va tham
cham lo » cham o, cam lo, cham soc
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
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: thuat ((sach ty) OR (sach y)) nang ((cao hoi) or (cau hoi)). hieu va cham lo va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach ty) OR (sach y)) nang ((cao hoi) OR (cau hoi)). hieu va cham lo va hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((sach ty) OR (sach y)) nang ((cao hoi) or (cau hoi)). hieu va cham lo va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: thuat ((sach ty) OR (sach y)) nang ((cao hoi) or (cau hoi)). hieu va cham lo va hanh vai cua te*.