Perhaps you should try some spelling variations:
van thanh » ban thanh
thanh di » thanh doi, thanh de, thanh do
va thanh » gia thanh, ban thanh, va tinh
van tuan » van quan, van ban, anh tuan
cua viet » ca viet, hoa viet, cua vat
su sach » so sach, vu sach
y sang » _ sang, duy sang
soc va » hoc va, loc va, doc va
me hoi » le hoi
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y sang ((me hoi) or (xa hoi)). lieu ((van thanh) OR (van tuan)) soc va thanh di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y sang ((me hoi) OR (xa hoi)). lieu ((van thanh) OR (van tuan)) soc va thanh di cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y sang ((me hoi) or (xa hoi)). lieu ((van thanh) OR (van tuan)) soc va thanh di cua viet".
• Adding a wildcard symbol may retrieve word variants: su sach y sang ((me hoi) or (xa hoi)). lieu ((van thanh) OR (van tuan)) soc va thanh di cua viet*.