Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ban thanh » ban hanh, ban hang
va triet » va thiet, va trien, ve triet
sach ty » sach y, sach tu, sach thu
cuc ban » cua ban, cac ban, cuu ban
nang xa » nang x, lang xa, nang ma
va cam » va cham, va cac, va cai
va cao » va cac, va co, va dao
sai ky » sac ky
dai va » mai va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (sai ky)) nang xa hoi. hieu ((va cam) OR (va cao)) cuc ban thanh dai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sai ky)) nang xa hoi. hieu ((va cam) OR (va cao)) cuc ban thanh dai va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sai ky)) nang xa hoi. hieu ((va cam) OR (va cao)) cuc ban thanh dai va triet*".