Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
ban thanh » ban hanh, ban hang
su triet » su viet, su tien, ve triet
tuc ban » thuc ban, truc ban, tu ban
sach ly » sach y, sach lo, sach ty
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
va cao » va cac, va co, va dao
doi su » oi su, don su, voi su
va cam » va cham, va cac, va cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ly ((nang xa) or (lang xa)) hoi. hieu ((va cam) OR (va cao)) tuc ban thanh doi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly ((nang xa) OR (lang xa)) hoi. hieu ((va cam) OR (va cao)) tuc ban thanh doi su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ly ((nang xa) or (lang xa)) hoi. hieu ((va cam) OR (va cao)) tuc ban thanh doi su triet".
• Adding a wildcard symbol may retrieve word variants: su sach ly ((nang xa) or (lang xa)) hoi. hieu ((va cam) OR (va cao)) tuc ban thanh doi su triet*.