Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
lai cua » dai cua, hai cua, lai chau
va hanh » va thanh, va danh, ban hanh
cua tre » cua te, cuu tre, cua triet
sach tu » sach thu, cach tu, sach ty
nong xa » song xa, dong xa, nong va
tu nong » tu dong, tu cong, tu tong
va cam » va cham, va cac, va cao
ve cai » va cai, ve cac, ve tai

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 tu nong xa hoi. hieu ((ve cai) or (va cam)) duc ((va hanh) or (van hanh)) lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu nong xa hoi. hieu ((ve cai) OR (va cam)) duc ((va hanh) OR (van hanh)) lai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach tu nong xa hoi. hieu ((ve cai) or (va cam)) duc ((va hanh) or (van hanh)) lai cua tre*.