Perhaps you should try some spelling variations:
nang cau » nang cao, hang cau, nang dau
thien va » thien van, tien va, thien tai
va thanh » gia thanh, ban thanh, va tinh
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, tu cach
te sach » toc sach
va cham » va chat, va tham
va hanh » van hanh, va danh, ban hanh

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 (te sach)) ky nang cau hoi. thien va cham soc ((va hanh) or (va thanh)) lai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang cau hoi. thien va cham soc ((va hanh) OR (va thanh)) lai su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ky nang cau hoi. thien va cham soc ((va hanh) or (va thanh)) lai su triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) ky nang cau hoi. thien va cham soc ((va hanh) or (va thanh)) lai su triet*.