Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
khanh dai » thanh dat, khanh van, thanh dam
phan dai » phan dau, phan day, phan loai
thuc xay » thuc day, tuc xay, thuat xay
nam thuc » nam thuoc, am thuc, nam thu
su sach » so sach
hieu le » hieu ve, hieu he, hieu ly
nang ma » tang ma, sang ma, nang cao
vu sach » vu bach, vu khach
v nang » va nang, vu nang, van nang
le nam » ly nam, he nam, le na

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (vu sach)) v nang ma hoa. hieu le nam thuc xay ((khanh dai) OR (phan dai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) v nang ma hoa. hieu le nam thuc xay ((khanh dai) OR (phan dai)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) v nang ma hoa. hieu le nam thuc xay ((khanh dai) OR (phan dai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) v nang ma hoa. hieu le nam thuc xay ((khanh dai) OR (phan dai)) cua triet*.