Perhaps you should try some spelling variations:
cuu tre » cua tre, cau tren, cau treo
danh vi » hanh vi, dinh vi, danh di
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
ky tang » ky nang, kho tang, ky trong
ky dang » ky nang, ky danh
soc va » hoc va, loc va, goc va
doc va » duoc va, hoc va, duc va
vi cuu » vi luu, vinh cuu
tu sac » tu sach, tu cac, tu san

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

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