Perhaps you should try some spelling variations:
ban thanh » ban hanh
lang khoa » hang khoa, dang khoa, long khoa
khoa hoi » khoan hoi, khoa hoc, khoa doi
ban hang » ngan hang
toc sac » toc sach, toc san, hoc sach
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
cua te » cua tu
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sac ky lang khoa hoi. hieu ve cam duc ((ban thanh) OR (ban hang)) vi ((cua te) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky lang khoa hoi. hieu ve cam duc ((ban thanh) OR (ban hang)) vi ((cua te) OR (cua su))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sac ky lang khoa hoi. hieu ve cam duc ((ban thanh) OR (ban hang)) vi ((cua te) or (cua su))*".