Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
vu kham » vu khanh
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
ve chat » va chat, van chat
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
vu cham » va cham, tu cham, qua cham
vi cau » va cau, ve cau, di cau
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky lang ha hoi. hieu ((ve chat) or (((vu cham) or (vu kham)))) hoc va danh vi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang ha hoi. hieu ((ve chat) OR (((vu cham) OR (vu kham)))) hoc va danh vi cau tren.
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang ha hoi. hieu ((ve chat) or (((vu cham) or (vu kham)))) hoc va danh vi cau tren*.