Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
lu hanh » luu hanh, du hanh, ly hanh
tu hanh » du hanh, thuc hanh, thi hanh
ve cai » va cai, ve cac, ve tai
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tu hanh) OR (lu hanh)) x hoi. hieu ((ve cai) OR (va cam)) duc va hanh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((tu hanh) OR (lu hanh)) x hoi. hieu ((ve cai) or (va cam)) duc va hanh vi cua te~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((tu hanh) OR (lu hanh)) x hoi. hieu ((ve cai) or (va cam)) duc va hanh vi cua te*.