Perhaps you should try some spelling variations:
luu tre » luu tru, cuu tre, luy tre
danh vi » hanh vi, dinh vi, danh va
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
ve cham » va cham, ve chat, vu cham
danh di » danh du, xanh di, danh dien
tu cham » toc cham, thi cham
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 dang ha hoi. hieu ((ve cham) or (tu cham)) hoc va ((danh vi) OR (danh di)) luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky dang ha hoi. hieu ((ve cham) OR (tu cham)) hoc va ((danh vi) OR (danh di)) luu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky dang ha hoi. hieu ((ve cham) or (tu cham)) hoc va ((danh vi) OR (danh di)) luu tre".
• Adding a wildcard symbol may retrieve word variants: tu sai ky dang ha hoi. hieu ((ve cham) or (tu cham)) hoc va ((danh vi) OR (danh di)) luu tre*.