Perhaps you should try some spelling variations:
thien van » thi van
tu sach » thu sach, te sach, tu cach
truc va » thuc va, thuc vat, trung va
hai cua » thai cua, dai cua, hoi cua
vai cua » dai cua, lai cua, bai cua
va hanh » van hanh, va thanh, va danh
ha truc » ba truc, ha thuc, hang truc
su sach » so sach, vu sach
van ha » van hoa, van chat, van hanh
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 (su sach)) ky nang x hoi. thien van ha truc va hanh ((vai cua) OR (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang x hoi. thien van ha truc va hanh ((vai cua) OR (hai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ky nang x hoi. thien van ha truc va hanh ((vai cua) OR (hai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang x hoi. thien van ha truc va hanh ((vai cua) OR (hai cua)) tre*.