Perhaps you should try some spelling variations:
ban hang » ngan hang
kham coc » kham cuoc, khac cuoc, khac co
ve kham » vu kham, va kham, ve cham
te sach » toc sach
hieu ve » hieu va, hieu van
vi cua » vai cua, di cua
te sac » te cac, te san
nang o » nang co, nang ho, nang ro
cua te » cua tu
o hoi » co hoi, o hoc, o hai

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) or (te sach)) ky nang o hoi. hieu ve kham coc ((ban hanh) OR (ban hang)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te sach)) ky nang o hoi. hieu ve kham coc ((ban hanh) OR (ban hang)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) or (te sach)) ky nang o hoi. hieu ve kham coc ((ban hanh) OR (ban hang)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (te sach)) ky nang o hoi. hieu ve kham coc ((ban hanh) OR (ban hang)) vi cua te*.