Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
danh doi » danh di, thanh doi, dung doi
cham loc » cham soc, chon loc, cham o
sang ky » sang kyo, dang ky, tang ky
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va danh » va dinh, va dan, va hanh
san ky » van ky, dan ky, ban ky
loc va » hoc va, luc va
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: te ((san ky) or (sang ky)) nang x hoi. hieu ve cham loc va danh doi ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((san ky) OR (sang ky)) nang x hoi. hieu ve cham loc va danh doi ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((san ky) or (sang ky)) nang x hoi. hieu ve cham loc va danh doi ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: te ((san ky) or (sang ky)) nang x hoi. hieu ve cham loc va danh doi ((cua triet) OR (va triet))*.