Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
so sach » so sanh, bo sach, co sach
dang xa » dang xay, lang xa, dang ha
va cam » va cham, va cao, va cai
loc va » hoc va, luc va
cua tu » cua tuc, cua su, cua cu

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 _ dang xa hoi. hieu ((va cam) or (va cac)) loc va thanh vi ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach _ dang xa hoi. hieu ((va cam) OR (va cac)) loc va thanh vi ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach _ dang xa hoi. hieu ((va cam) or (va cac)) loc va thanh vi ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: so sach _ dang xa hoi. hieu ((va cam) or (va cac)) loc va thanh vi ((cua te) OR (cua tu))*.