Perhaps you should try some spelling variations:
chau triet » cau triet, cua triet, cau trieu
thanh hai » thanh phan, thanh hoa, thanh san
hanh lai » hanh tai, thanh lap, thanh loi
hanh lam » thanh lap, hanh kem, hanh va
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hac duc » hoc duc, ha duc, thach duc
va hac » van hac, va khac, va cac
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 ky nang x hoi. lieu va hac duc va ((((hanh lai) OR (hanh lam))) or (thanh hai)) chau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. lieu va hac duc va ((((hanh lai) OR (hanh lam))) OR (thanh hai)) chau triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. lieu va hac duc va ((((hanh lai) OR (hanh lam))) or (thanh hai)) chau triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. lieu va hac duc va ((((hanh lai) OR (hanh lam))) or (thanh hai)) chau triet*.