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

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