Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh moi » thanh loi, thanh hoa, thanh hai
dang xay » dang van, van xay
ve triet » va trien, su triet
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tu, cac tac
tuc ban » thuc ban, truc ban, tu ban
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky ((nang x) or (dang xay)) hoi. hieu va cac tuc ban thanh moi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((nang x) OR (dang xay)) hoi. hieu va cac tuc ban thanh moi ve triet.
• Adding a wildcard symbol may retrieve word variants: su sac ky ((nang x) or (dang xay)) hoi. hieu va cac tuc ban thanh moi ve triet*.