Perhaps you should try some spelling variations:
cuu tre » cua tre, cau tren, cau treo
tu cham » toc cham, thi cham
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
ve cham » va cham, ve chat, vu cham
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky lang » ky dang, ky tang, tay lang
vi cuu » vi luu, vinh cuu
tu sai » tu bai, tu san, tu cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ((ky lang) OR (ky nang)) hoa hoi. hieu ((ve cham) or (tu cham)) hoc va danh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ((ky lang) OR (ky nang)) hoa hoi. hieu ((ve cham) OR (tu cham)) hoc va danh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ((ky lang) OR (ky nang)) hoa hoi. hieu ((ve cham) or (tu cham)) hoc va danh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sai ((ky lang) OR (ky nang)) hoa hoi. hieu ((ve cham) or (tu cham)) hoc va danh vi cuu tre*.