Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
duoc may » duoc ly, hoc may, duoc lam
vien cua » viec cua, dien cua, tien cua
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
hieu va » hieu qua
duoc ma » duoc lam
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa

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