Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
vien cua » viec cua, dien cua, tien cua
may sinh » may tinh, cay sinh, ngay sinh
duoc may » duoc ma, duoc ly, hoc may
nam duoc » nam thuoc, da duoc, dat duoc
hieu va » hieu qua
tang ma » mang may, tang van
ma hoi » mai hoi, xa hoi, ma hoa
sac ky » cac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ky) OR (sai ky)) tang ma hoi. ((hieu va) or (lieu va)) nam duoc may sinh vien cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sai ky)) tang ma hoi. ((hieu va) OR (lieu va)) nam duoc may sinh vien cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) OR (sai ky)) tang ma hoi. ((hieu va) or (lieu va)) nam duoc may sinh vien cua triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) OR (sai ky)) tang ma hoi. ((hieu va) or (lieu va)) nam duoc may sinh vien cua triet*.