Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
hieu phan » phieu phan, lieu phan, hieu pham
ban thanh » ban hanh, ban hang
van triet » va triet, van thiet, van trieu
phan van » pham van, thanh van, luan van
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
dau xuc » dau xac, dau nuoc
dau xua » dau cua, dao xuan, dau luan
x hoi » xa hoi, o hoi, 5 hoi

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 ky nang ((x hoi) or (x ho)). hieu phan ((dau xuc) OR (dau xua)) ban thanh phan van triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((x hoi) OR (x ho)). hieu phan ((dau xuc) OR (dau xua)) ban thanh phan van triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ((x hoi) or (x ho)). hieu phan ((dau xuc) OR (dau xua)) ban thanh phan van triet*".