Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
hieu van » hieu va, thien van, lieu va
te sach » toc sach
hac xuc » chat xuc
van cua » vang cua, ban cua, dan cua
van hac » van hoc, van ha, van hai
ty hang » ly hang, thi hang, thu hang
cua tuc » cua duc, cua tu, cua thuoc
ca hoi » cau hoi, cua hoi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ty hang) or (ty xang)) ca hoi. hieu van hac xuc ((va thanh) OR (ban thanh)) van cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty hang) OR (ty xang)) ca hoi. hieu van hac xuc ((va thanh) OR (ban thanh)) van cua tuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty hang) or (ty xang)) ca hoi. hieu van hac xuc ((va thanh) OR (ban thanh)) van cua tuc".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty hang) or (ty xang)) ca hoi. hieu van hac xuc ((va thanh) OR (ban thanh)) van cua tuc*.