Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lam » thanh lap, hanh lam, thanh nam
thien van » thi van
thu sach » thuat sach, thuoc sach, thu hoach
hai tap » hai thap, bai tap, han tap
lam cua » nam cua, lam chat
tu sach » su sach, te sach, tu cach
hai tac » hai trac, hai tan, khai thac
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) or (thu sach)) ky nang x hoi. thien van ((hai tac) OR (hai tap)) gia thanh lam cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang x hoi. thien van ((hai tac) OR (hai tap)) gia thanh lam cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ky nang x hoi. thien van ((hai tac) OR (hai tap)) gia thanh lam cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang x hoi. thien van ((hai tac) OR (hai tap)) gia thanh lam cua triet*.