Perhaps you should try some spelling variations:
danh thanh » dinh thanh, dang thanh, nhanh thanh
thanh than » thanh thanh, thanh thang, thanh toan
duc danh » duc anh, duc manh, duc hanh
cuu tre » cau tren, cau treo
cac duc » cac du, cao duc, cac dac
cua tre » cua te, cua triet, dua tren
nang ho » nang hoc, nang co, tang ho
hieu ve » hieu va, hieu van
tu sac » tu sach, tu cac, tu san
ho lai » o lai
tu can » tu ban, tu cac, thu canh
ve cac » va cac, vien cac

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) or (tu can)) ky nang ho lai. hieu ve cac duc danh thanh than ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu can)) ky nang ho lai. hieu ve cac duc danh thanh than ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu can)) ky nang ho lai. hieu ve cac duc danh thanh than ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu can)) ky nang ho lai. hieu ve cac duc danh thanh than ((cua tre) OR (cuu tre))*.