Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
su triet » su viet, su tien, ve triet
sach thu » sach thue, sach thieu, sach tham
va thanh » gia thanh, va tinh, le thanh
pham day » phap day, pham duy, pham xay
ve pham » vi pham, v pham, ve phan
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, xach tay
hieu ve » hieu va, hieu van
ke su » ke suu, ve su, ky su

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 ty)) nang xa hoi. hieu ve pham day ((va thanh) or (ban thanh)) ke su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thu) OR (sach ty)) nang xa hoi. hieu ve pham day ((va thanh) OR (ban thanh)) ke su triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach thu) or (sach ty)) nang xa hoi. hieu ve pham day ((va thanh) or (ban thanh)) ke su triet*.