Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang deo » dang do, dang de, dang dieu
hieu ve » hieu va, hieu van
cac thu » cach thuc, cac thoi
thu day » thuc day, thu da, thu dac
dung de » dung he, dung dat
cua tre » cua te, cuu tre, dua tren
ve cac » va cac, vien cac
sai ky » sac ky
vu sai » vu hai, vu san, vu dai
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sai ky nang x hoi. hieu ve cac thu day ((dang deo) or (dung de)) ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sai ky nang x hoi. hieu ve cac thu day ((dang deo) OR (dung de)) ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sai ky nang x hoi. hieu ve cac thu day ((dang deo) or (dung de)) ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: vu sai ky nang x hoi. hieu ve cac thu day ((dang deo) or (dung de)) ((cua tre) OR (cua triet))*.