Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
qua cham » qua cac, va cham, qua cua
nang ho » nang hoc, nang co, tang ho
qua hai » qua hoat
va hanh » van hanh, va thanh, va danh
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
ho hoi » hoc hoi, hoa hoi, hoi hoi
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky nang ho hoi. hieu ((qua cham) OR (qua hai)) luc ((va hanh) or (ban thanh)) dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang ho hoi. hieu ((qua cham) OR (qua hai)) luc ((va hanh) OR (ban thanh)) dai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky nang ho hoi. hieu ((qua cham) OR (qua hai)) luc ((va hanh) or (ban thanh)) dai cua te*".