Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thi hang » thi hanh, thi nang, thi hong
thanh vi » hanh vi, thanh va, thanh ve
sach thi » sach thu, sach tai, sach thieu
su sach » so sach, vu sach
dua ban » dia ban, cua ban, qua ban
hang xa » hoang xa, hang va, hang ca
va cham » va chat, va tham
vi cua » vai cua, di cua
cua te » cua tu
va cam » va cac, va cao, va cai
ve cam » ve cham, ve cac, ve cai

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