Perhaps you should try some spelling variations:
vinh cuu » dinh cuu, sinh cua, dinh cu
thi cham » thi hai, toc cham, thi ha
va danh » va dinh, va dan, va hanh
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
ve cham » va cham, ve chat, vu cham
vi cuu » vi luu
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 ((vi cuu) OR (vinh 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 ((vi cuu) OR (vinh 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 ((vi cuu) OR (vinh 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 ((vi cuu) OR (vinh cuu)) tre*.