Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
nang mai » nang tai, lang mai, nang cai
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
cam tuc » cam xuc, nam thuc, dam thuc
cam tu » cam thu, nam tu, dam tu
vi cua » vai cua, di cua

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 y ((nang mai) or (nang ma)) hoi. lieu va ((cam tuc) OR (cam tu)) ban thanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang mai) OR (nang ma)) hoi. lieu va ((cam tuc) OR (cam tu)) ban thanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((nang mai) or (nang ma)) hoi. lieu va ((cam tuc) OR (cam tu)) ban thanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang mai) or (nang ma)) hoi. lieu va ((cam tuc) OR (cam tu)) ban thanh vi cua triet*.