Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh thai » nhanh thai, hinh thai, hanh tai
van hanh » van thanh, ban hanh, van anh
cac duc » cac du, cao duc, cac dac
cua tre » cua te, cuu tre, dua tren
nang ro » nang co, nang ho, nang ra
hieu ve » hieu va, hieu van
duc van » duc va, duc tan, duc manh
tu bat » tu ban, tu dat
ro lai » o lai, ho lai, ru lai
tu san » thu san, tu ban, tu can
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 bat) or (tu san)) ky nang ro lai. hieu ve cac duc van hanh thai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu bat) OR (tu san)) ky nang ro lai. hieu ve cac duc van hanh thai ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: ((tu bat) or (tu san)) ky nang ro lai. hieu ve cac duc van hanh thai ((cua tre) or (cua triet))*.