Perhaps you should try some spelling variations:
cuu tre » cua tre, cau tren, cau treo
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
vu kham » vu khanh
ve cham » va cham, ve chat, vu cham
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
ha hoi » ha noi, xa hoi, va hoi
vi cuu » vi luu, vinh cuu
tu sac » tu sach, tu cac, tu san

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) or (hoa hoi)). hieu ((ve cham) or (vu kham)) hoc va danh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang ((ha hoi) OR (hoa hoi)). hieu ((ve cham) OR (vu kham)) hoc va danh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang ((ha hoi) or (hoa hoi)). hieu ((ve cham) or (vu kham)) hoc va danh vi cuu tre*.