Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, tu cach
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
ve chat » va chat, van chat
ve cham » va cham, vu cham, ve chim
xang xa » lang xa, mang xa, ang xa
te sach » toc sach
va cua » va chua, via cua, ca cua
cua tu » cua tuc, cua su, cua cu

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