Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh tai » thanh hai, thanh toan, doanh tai
ban thanh » ban hanh, ban hang
tai cua » thai cua, tai cuc, tri cua
sach ky » sac ky, sach y, sach kem
sach ty » sach y, sach tu, sach thu
ve bao » te bao, va bao
bo ban » co ban, lo ban, do ban
ve bac » ve cac, ve ban, he bac
x hoi » xa hoi, o hoi, x ho

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 ky) or (sach ty)) nang x hoi. hieu ((ve bac) or (ve bao)) bo ban thanh tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) nang x hoi. hieu ((ve bac) OR (ve bao)) bo ban thanh tai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach ty)) nang x hoi. hieu ((ve bac) or (ve bao)) bo ban thanh tai cua triet*.