Perhaps you should try some spelling variations:
lang khoa » hang khoa, dang khoa, long khoa
ban thanh » ban hang
khoa hoi » khoan hoi, khoa hoc, khoa doi
ban hanh » ban hang
toc sac » toc sach, toc san, hoc sach
ky lang » ky nang, ky dang, ky tang
hieu ve » hieu va, hieu van
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 xuc ((ban thanh) OR (ban hanh)) 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 xuc ((ban thanh) OR (ban hanh)) 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 xuc ((ban thanh) OR (ban hanh)) vi ((cua te) or (cua su))*".