Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hanh » ban hang
toc sach » hoc sach, doc sach, thuoc sach
nang mai » nang ma, nang tai, lang mai
va cham » va chat, va tham
hoc ban » hoc bang, hoc dan, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
ve cham » ve chat, vu cham, ve chim
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: ((te sach) or (toc sach)) ky nang mai hoi. hieu ((ve cham) or (va cham)) hoc ban hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky nang mai hoi. hieu ((ve cham) OR (va cham)) hoc ban hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ky nang mai hoi. hieu ((ve cham) or (va cham)) hoc ban hanh vi cua triet*.