Perhaps you should try some spelling variations:
sach tham » sach nha
tang vanh » tang van, tang hanh, tang thanh
sach thu » sach thue, sach thieu, cach thuc
duc tang » duc thang, duc tan, tuc tang
vanh dai » van dai, vanh tai, lanh dao
va triet » va thiet, va trien, ve triet
nang xa » nang x, lang xa, nang ma
va pham » van pham, va phat, va phap
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 thu) or (sach tham)) nang xa hoi. lieu va pham duc tang vanh dai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thu) OR (sach tham)) nang xa hoi. lieu va pham duc tang vanh dai va triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach thu) or (sach tham)) nang xa hoi. lieu va pham duc tang vanh dai va triet*.