Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
ve cham » va cham, ve chat, vu cham
va tham » van tham, va cham, va thanh
han mai » han tai, ban mai, han mac
tuc va » thuc va, truc va, tuc xa
va han » va phan, van han, va hanh
thiet » thieu

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 ty xang xa hoi. hieu ((ve cham) or (va tham)) tuc va han mai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty xang xa hoi. hieu ((ve cham) OR (va tham)) tuc va han mai va thiet.
• Adding a wildcard symbol may retrieve word variants: so sach ty xang xa hoi. hieu ((ve cham) or (va tham)) tuc va han mai va thiet*.