Perhaps you should try some spelling variations:
cuu tre » cua tre, cau tren, cau treo
dinh vi » dinh ve, dinh viet, dinh tri
dinh da » dinh dat, dinh dao, tinh da
thuc va » thuc vat, thuc dan, thuc day
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky nang x hoi. hieu ((ve cam) OR (va cam)) thuc va ((dinh da) or (dinh vi)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang x hoi. hieu ((ve cam) OR (va cam)) thuc va ((dinh da) OR (dinh vi)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky nang x hoi. hieu ((ve cam) OR (va cam)) thuc va ((dinh da) or (dinh vi)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang x hoi. hieu ((ve cam) OR (va cam)) thuc va ((dinh da) or (dinh vi)) cuu tre*.