Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
ky sang » ky nang, ky dang, duy sang
ky tang » ky nang, ky dang, kho tang
ve cham » ve chat, vu cham, ve chim
doan vi » doan va, don vi, doan thi
va doan » va doanh, van doan, va dan
va cham » va chat, va tham
vi cua » vai cua, di cua
tu sai » tu bai, tu san, tu cai
tuc va » thuc va, truc va, tuc xa

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 sang) OR (ky tang)) xa hoi. hieu ((ve cham) or (va cham)) tuc va doan vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ((ky sang) OR (ky tang)) xa hoi. hieu ((ve cham) OR (va cham)) tuc va doan vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ((ky sang) OR (ky tang)) xa hoi. hieu ((ve cham) or (va cham)) tuc va doan vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sai ((ky sang) OR (ky tang)) xa hoi. hieu ((ve cham) or (va cham)) tuc va doan vi cua tre*.