Perhaps you should try some spelling variations:
cuu tre » cua tre, cau tren, cau treo
den cuu » dinh cuu, dien cuc, dien cua
dan den » ban den, van den, dan dung
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
van hoi » van hoa, van hoc, van loi
van hoe » van hoa, van hoc, van hieu
ky tang » ky nang, ky dang, kho tang
dai ky » dan ky, dai ly, sai ky
tuc va » thuc va, truc va, tuc xa
vu dai » vi dai, va dai, vu hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu dai ky tang ((van hoi) or (van hoe)). hieu ve cham ((tuc va) or (duc va)) dan den cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu dai ky tang ((van hoi) OR (van hoe)). hieu ve cham ((tuc va) OR (duc va)) dan den cuu tre.
• Adding a wildcard symbol may retrieve word variants: vu dai ky tang ((van hoi) or (van hoe)). hieu ve cham ((tuc va) or (duc va)) dan den cuu tre*.