Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh thai » nhanh thai, hinh thai, hanh tai
manh hanh » xanh hanh, danh thanh, minh thanh
dua tren » dung tren
duc manh » suc manh, duc anh, duc minh
ky dang » ky danh
hieu ve » hieu va, hieu van
cao duc » dao duc, cao suc, giao duc
su sac » su sach, su cac, su xac
ha hoi » hoa hoi, ha noi, xa hoi
ve cao » va cao, ve bao, ve cac

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

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