Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
su triet » su viet, su tien, ve triet
toc sach » hoc sach, doc sach, thuoc sach
duc gia » quoc gia
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
sang ma » tang ma, nang ma, sang tao
nang xa » nang x, lang xa, nang ma
van su » dan su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) y ((nang xa) or (sang ma)) hoi. hieu ve pham duc gia thanh van su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y ((nang xa) OR (sang ma)) hoi. hieu ve pham duc gia thanh van su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) y ((nang xa) or (sang ma)) hoi. hieu ve pham duc gia thanh van su triet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) y ((nang xa) or (sang ma)) hoi. hieu ve pham duc gia thanh van su triet*.