Perhaps you should try some spelling variations:
ban thanh » ban hang
hang khoa » dung khoa
khoa hoi » khoan hoi, khoa hoc, khoa doi
ban hanh » ban hang
hieu le » hieu ve, hieu he, hieu ly
ky hang » ky nang, ly hang, ky dang
sac ky » cac ky, sai ky
le nam » ly nam, he nam, le na
tai su » tai so, tai tu, lai su
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky hang khoa hoi. hieu le nam thu ((ban thanh) OR (ban hanh)) ((tai su) or (va su)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky hang khoa hoi. hieu le nam thu ((ban thanh) OR (ban hanh)) ((tai su) OR (va su)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky hang khoa hoi. hieu le nam thu ((ban thanh) OR (ban hanh)) ((tai su) or (va su)) triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky hang khoa hoi. hieu le nam thu ((ban thanh) OR (ban hanh)) ((tai su) or (va su)) triet*.