Perhaps you should try some spelling variations:
thien van » thi van
thu sach » thuat sach, thuoc sach, thu hoach
nang noi » nang doc
van cham » van chat, van tham, va cham
hanh lai » hanh lam, hanh tai, thanh lap
chau tre » chay tren, chau tho, cho tre
tu sach » su sach, te sach, tu cach
noi hoi » noi doi, doi hoi, hoi hoi
xuc va » tuc va, luc va, xac va

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