Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
sang xa » song xa, lang xa, mang xa
sang ma » tang ma, nang ma, sang tao
ve cac » va cac, vien cac

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 y ((sang xa) OR (sang ma)) hoi. hieu ve cac xuc ((va hanh) or (va danh)) dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((sang xa) OR (sang ma)) hoi. hieu ve cac xuc ((va hanh) OR (va danh)) dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((sang xa) OR (sang ma)) hoi. hieu ve cac xuc ((va hanh) or (va danh)) dai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((sang xa) OR (sang ma)) hoi. hieu ve cac xuc ((va hanh) or (va danh)) dai cua tre*.