Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
mai khoi » mai khoa, tai khoa, cac khoi
thanh vi » hanh vi, thanh va, thanh ve
nang mai » nang ma, nang tai, lang mai
cua tre » cua te, cuu tre, dua tren
tu cao » cu cao, tu cac, vu cao
thu va » thuc va, thue va, tu va
ve cac » va cac, vien cac
ve ca » ve cai, ve cau, ve cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cao ky nang mai khoi. hieu ((ve ca) or (ve cac)) thu va thanh vi ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cao ky nang mai khoi. hieu ((ve ca) OR (ve cac)) thu va thanh vi ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cao ky nang mai khoi. hieu ((ve ca) or (ve cac)) thu va thanh vi ((cua tre) OR (cua triet))*".