Perhaps you should try some spelling variations:
luu tre » cuu tre, luy tre
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
ve cham » va cham, ve chat, vu cham
tu cham » toc cham, thi cham
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
tu sai » tu bai, tu san, tu cai
ha hoi » hoa hoi, ha noi, xa hoi
sai ky » sac ky
tru » truc

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 ((luu tre) OR (luu tru))~.
• 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 ((luu tre) OR (luu tru)).
• 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 ((luu tre) OR (luu tru))".
• Adding a wildcard symbol may retrieve word variants: tu sai ky dang ha hoi. hieu ((ve cham) or (tu cham)) hoc va danh vi ((luu tre) OR (luu tru))*.