Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
bach tuoc » sach duoc, sach nuoc
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
vu khach » vu khanh, vu khac, vay khach
hieu va » lieu va, hieu qua
bac tuc » bac tu, bac thua
nang ma » tang ma, sang ma, nang cao
so sach » so sanh, bo sach, co sach
tai cua » thai cua, tai cuc, tri cua
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu khach) or (so sach)) ky nang ma hoi. hieu va ((bac tuc) or (bach tuoc)) van hanh tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khach) OR (so sach)) ky nang ma hoi. hieu va ((bac tuc) OR (bach tuoc)) van hanh tai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((vu khach) or (so sach)) ky nang ma hoi. hieu va ((bac tuc) or (bach tuoc)) van hanh tai cua triet*.