Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vai » thanh hai, thanh van, thanh tai
thi hang » thi hanh, thi nang, thi thanh
thi hong » thi cong, thi phuong, thi hanh
su sach » so sach, vu sach
vai cua » dai cua, hai cua, lai cua
duc ban » duc tan, duc van, dua ban
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
cua te » cua tu

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