Perhaps you should try some spelling variations:
thien van » thi van
van hanh » van thanh, ban hanh, van anh
sang tao » hang tai
va thanh » gia thanh, ban thanh, va tinh
doi cua » dai cua, hoi cua
te sach » toc sach
tang ma » mang may, tang van
cua tre » cua te, cuu tre, cua triet
van am » van nam, van lam, van dam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y ((tang ma) or (sang tao)) hoi. thien van am thuc ((va thanh) or (van hanh)) doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((tang ma) OR (sang tao)) hoi. thien van am thuc ((va thanh) OR (van hanh)) doi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y ((tang ma) or (sang tao)) hoi. thien van am thuc ((va thanh) or (van hanh)) doi cua tre*.