Perhaps you should try some spelling variations:
minh chanh » minh thanh, minh danh, dinh thanh
chanh thai » nhanh thai, chat thai, hinh thai
thai cua » than cua, tai cuc, tri cua
kho tang » cao tang
duc minh » duc anh
cua tre » cua te, cuu tre, cua triet
ky tang » ky nang, ky dang, ky trong
su cac » tu cac, su cao, su can
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cac ((ky tang) or (kho tang)) xa hoi. hieu ((ve cam) OR (ve cac)) duc minh chanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac ((ky tang) OR (kho tang)) xa hoi. hieu ((ve cam) OR (ve cac)) duc minh chanh thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ((ky tang) or (kho tang)) xa hoi. hieu ((ve cam) OR (ve cac)) duc minh chanh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: su cac ((ky tang) or (kho tang)) xa hoi. hieu ((ve cam) OR (ve cac)) duc minh chanh thai cua tre*.