Perhaps you should try some spelling variations:
xanh hanh » danh thanh, ban hanh, van hanh
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
va thanh » gia thanh, ban thanh, va tinh
ngu xanh » ngu anh, ngu danh, ngu hanh
hanh dai » hanh tai, hanh dao, vanh dai
hieu va » lieu va, hieu qua
tu can » tu cac, thu canh
tu ban » thu ban, te ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu can) OR (tu ban)) ky ((nang x) or (dang xay)) hoi. hieu va thanh ngu xanh hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu can) OR (tu ban)) ky ((nang x) OR (dang xay)) hoi. hieu va thanh ngu xanh hanh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu can) OR (tu ban)) ky ((nang x) or (dang xay)) hoi. hieu va thanh ngu xanh hanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu can) OR (tu ban)) ky ((nang x) or (dang xay)) hoi. hieu va thanh ngu xanh hanh dai cua triet*.