Perhaps you should try some spelling variations:
hanh tri » thanh tri, hanh tai, hanh trinh
so sach » so sanh, co sach, hoc sach
bo sach » co sach, hoc sach
thi van » thi lan, thi hanh, thi nang
van bac » van ban, van bao, van hac
xuc van » duc van, vuc van, xuc ban
luc van » luoc van, luu van, duc van
cua te » cua tu
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: ((so sach) OR (bo sach)) ky nang x hoi. thi van bac ((xuc van) or (luc van)) hanh tri cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) ky nang x hoi. thi van bac ((xuc van) OR (luc van)) hanh tri cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (bo sach)) ky nang x hoi. thi van bac ((xuc van) or (luc van)) hanh tri cua te".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (bo sach)) ky nang x hoi. thi van bac ((xuc van) or (luc van)) hanh tri cua te*.