Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh loi » thanh hoa, thanh hai, thanh lap
xay thanh » day thanh, giay thanh, ngay thanh
thuoc xay » thuc xay, truoc xay, thuat xay
nha thuoc » nha nuoc, nhan thuc, nha hoc
hieu ly » hieu ky, lieu ly, dieu ly
loi cua » loai cua, hoi cua, doi cua
su sach » so sach
hieu le » hieu ve, hieu he, tieu le
nang ma » tang ma, sang ma, nang cao
ly nang » ky nang, ly hang, ly vang
vu sach » vu bach, vu khach

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)) ly nang ma hoa. ((hieu le) or (hieu ly)) nha thuoc xay thanh loi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ly nang ma hoa. ((hieu le) OR (hieu ly)) nha thuoc xay thanh loi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ly nang ma hoa. ((hieu le) or (hieu ly)) nha thuoc xay thanh loi cua triet*.