Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
vu cham » va cham, vu kham, tu cham
ve cham » va cham, ve chat, ve chim
ky tang » ky nang, ky dang, kho tang
ky lang » ky nang, ky dang, tay lang
vi cua » vai cua, di cua
tu san » thu san, tu ban, tu can

You may be able to get more results by adjusting your search query.

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