Perhaps you should try some spelling variations:
kham chua » kham pha
dinh viet » ninh viet, danh viet, trinh viet
cuu tre » cua tre, cau tren, cau treo
danh vi » hanh vi, dinh vi, danh di
chua va » chuc va, chua may, chuan ha
hieu ca » hieu cac, hieu cua, hieu va
hieu ha » hieu hoa, hieu va, hieu xa
sac ky » cac ky, sai ky
tu sac » tu sach, tu cac, tu san
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: tu sac ky nang x hoi. ((hieu ha) or (hieu ca)) kham chua va ((danh vi) or (dinh viet)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang x hoi. ((hieu ha) OR (hieu ca)) kham chua va ((danh vi) OR (dinh viet)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang x hoi. ((hieu ha) or (hieu ca)) kham chua va ((danh vi) or (dinh viet)) cuu tre*.