Perhaps you should try some spelling variations:
thien van » thi van
thanh lap » thanh san, phan lap, thanh hai
cua triet » cua viet, su triet, va triet
thu sach » thuat sach, thuoc sach, thu hoach
thac cac » thoai cac, thanh cac, thuc cach
tu sach » su sach, te sach, tu cach
hac tac » cac tac, hoc tach, thac toc
lap cua » lai cua, tap cua, lam cua

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 ho. thien van ((hac tac) OR (thac cac)) gia thanh lap cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang x ho. thien van ((hac tac) OR (thac cac)) gia thanh lap cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ky nang x ho. thien van ((hac tac) OR (thac cac)) gia thanh lap cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang x ho. thien van ((hac tac) OR (thac cac)) gia thanh lap cua triet*.