Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cuu tre, dua tren
nang ra » nang ma, lang ra, nang ro
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
tu bac » tu ban, tu cac, tu bat
ra lai » ra glai, ru lai, va 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 bac) or (tu san)) ky nang ra lai. hieu ve cac xuc van hanh tai ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu bac) OR (tu san)) ky nang ra lai. hieu ve cac xuc van hanh tai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu bac) or (tu san)) ky nang ra lai. hieu ve cac xuc van hanh tai ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: ((tu bac) or (tu san)) ky nang ra lai. hieu ve cac xuc van hanh tai ((cua tre) OR (cua triet))*.