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
truc va » thuc va, thuc vat, trung va
su tien » su kien, su hien, tu tieng
y xang » ty xang
xang x » nang x
ve cac » vien cac
x hoi » xa hoi, o hoi, x ho
vi su » va su, ve su, ki su

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 y xang x hoi. hieu ((ve cac) OR (va cac)) truc va thanh vi su tien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y xang x hoi. hieu ((ve cac) OR (va cac)) truc va thanh vi su tien".
• Adding a wildcard symbol may retrieve word variants: so sach y xang x hoi. hieu ((ve cac) OR (va cac)) truc va thanh vi su tien*.