Perhaps you should try some spelling variations:
dang dai » dang hai, dang bai, dang dan
cham buc » cham soc, pham duc, cham cuu
van cham » van chat, van tham, va cham
hieu van » hieu va, thien van, lieu va
xa dang » xa dong, da dang, xo dang
so sach » bo sach, co sach, hoc sach
ly hang » ly quang
so sanh » do sanh
ma hoi » mai hoi, xa hoi, ma hoa
buc xa » tuc xa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) OR (so sanh)) ((ty xang) or (ly hang)) ma hoi. hieu van cham buc xa dang dai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) ((ty xang) OR (ly hang)) ma hoi. hieu van cham buc xa dang dai cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (so sanh)) ((ty xang) or (ly hang)) ma hoi. hieu van cham buc xa dang dai cua vat".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (so sanh)) ((ty xang) or (ly hang)) ma hoi. hieu van cham buc xa dang dai cua vat*.