Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
lam truoc » lam thuoc, nam truoc, lam truong
nam truc » nam truoc, nam thuc, nam trung
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang

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 v nang ma hoa. hieu ve ((lam truoc) or (nam truc)) ((van hanh) OR (ban hanh)) dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach v nang ma hoa. hieu ve ((lam truoc) OR (nam truc)) ((van hanh) OR (ban hanh)) dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach v nang ma hoa. hieu ve ((lam truoc) or (nam truc)) ((van hanh) OR (ban hanh)) dai cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach v nang ma hoa. hieu ve ((lam truoc) or (nam truc)) ((van hanh) OR (ban hanh)) dai cua triet*.