Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
manh hanh » xanh hanh, danh thanh, minh thanh
hanh tai » thanh tai, hang tai, han tai
duc manh » suc manh, duc anh, duc minh
ve giao » te giao, viet giao, van giao
cua tre » cua te, cuu tre, dua tren
hieu ve » hieu va, hieu van
ky danh » ky anh
ky dang » ky nang
ha hoi » hoa hoi, ha noi, xa hoi
su sai » su tai, su hai, su dai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ((ky dang) OR (ky danh)) ha hoi. hieu ve giao duc manh hanh tai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ((ky dang) OR (ky danh)) ha hoi. hieu ve giao duc manh hanh tai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ((ky dang) OR (ky danh)) ha hoi. hieu ve giao duc manh hanh tai ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: su sai ((ky dang) OR (ky danh)) ha hoi. hieu ve giao duc manh hanh tai ((cua tre) or (cua triet))*.