Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
phat duc » pham duc, phan duc, phan duoc
tai cua » thai cua, tai cuc, tri cua
duc van » duc va, duc tan, duc manh
hieu va » lieu va, hieu qua
tu sach » thu sach, te sach, tu cach
ty nang » ky nang, ty xang, ty hang
su sach » so sach, vu sach
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((tu sach) or (thu hoach))) or (su sach)) ty nang x hoi. hieu va phat duc van hanh tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (thu hoach))) OR (su sach)) ty nang x hoi. hieu va phat duc van hanh tai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) or (thu hoach))) or (su sach)) ty nang x hoi. hieu va phat duc van hanh tai cua triet*.