Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
truc va » thuc va, thuc vat, trung va
ky dang » ky nang, ky danh
dang ma » dang mau, dang mam, dang mat
ve cham » ve chat, vu cham, ve chim
va cham » va chat, va tham
vi cua » vai cua, di cua
dan vi » doan vi, don vi, dan va
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
ma hoi » mai hoi, xa hoi, ma hoa

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