Perhaps you should try some spelling variations:
hanh sinh » hanh tinh, hanh dinh, hinh sinh
cham thuc » nham thuc, pham thuc, tham thuc
cua triet » cua viet, su triet, va triet
doc sach » hoc sach, toc sach, nuoc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
va cham » va chat, va tham
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach ky nang ma hoi. hieu va cham thuc hanh sinh vien ((cua triet) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach ky nang ma hoi. hieu va cham thuc hanh sinh vien ((cua triet) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: doc sach ky nang ma hoi. hieu va cham thuc hanh sinh vien ((cua triet) or (cua te))*.