Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thien van » thi van
cua triet » cua viet, su triet, va triet
van dung » van dong, tin dung
sach ky » sac ky, sach y, sach ty
van dat » van dao, van dau, dan dat
hai cua » thai cua, dai cua, hoi cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky nang x ho. thien van dat nuoc ((van dung) or (xay dung)) hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang x ho. thien van dat nuoc ((van dung) OR (xay dung)) hai cua triet.
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang x ho. thien van dat nuoc ((van dung) or (xay dung)) hai cua triet*.