Perhaps you should try some spelling variations:
thi cham » thi hai, toc cham, thi ha
cuu tre » cua tre, cau tren, cau treo
va danh » va dan, va hanh, dia danh
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
ve cham » va cham, ve chat, vu cham
va dinh » van dinh, va kinh, va tinh
vi cuu » vi luu, vinh cuu
tu sai » tu bai, tu san, tu cai
sai ky » sac 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 sai ky lang ha hoi. hieu ((ve cham) or (thi cham)) hoc ((va danh) OR (va dinh)) vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky lang ha hoi. hieu ((ve cham) OR (thi cham)) hoc ((va danh) OR (va dinh)) vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky lang ha hoi. hieu ((ve cham) or (thi cham)) hoc ((va danh) OR (va dinh)) vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sai ky lang ha hoi. hieu ((ve cham) or (thi cham)) hoc ((va danh) OR (va dinh)) vi cuu tre*.