Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh tri » thanh tri, hanh tai, hanh triet
su sach » vu sach
cham xu » chao xu, cham cuu, chat xuc
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ty hang
so sach » so sanh, bo sach, co sach
ca viet » va viet, co viet, hoa viet
xu van » tu van, vu van, su van
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: ((su sach) or (so sach)) ty nang x hoi. hieu ve cham xu van ((hanh tri) OR (hanh trinh)) ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty nang x hoi. hieu ve cham xu van ((hanh tri) OR (hanh trinh)) ca viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ty nang x hoi. hieu ve cham xu van ((hanh tri) OR (hanh trinh)) ca viet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ty nang x hoi. hieu ve cham xu van ((hanh tri) OR (hanh trinh)) ca viet*.