Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van thanh » ban thanh, van tuan
cam truc » cau truc, nam truc, lam truoc
va danh » va dinh, va dan, va hanh
so sach » so sanh, bo sach, co sach
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
vu sach » vu bach, su sach, vu khach
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (vu sach)) y nang ma hoi. hieu va cam truc ((van thanh) or (va danh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (vu sach)) y nang ma hoi. hieu va cam truc ((van thanh) OR (va danh)) vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (vu sach)) y nang ma hoi. hieu va cam truc ((van thanh) or (va danh)) vi cua triet*.