Perhaps you should try some spelling variations:
thien van » thi van
thu sach » tu sach, thuat sach, thuoc sach
mang xa » lang xa, mang may, dang xay
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
xa hanh » xa thanh, xa khanh, va hanh
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y ((mang xa) or (nang x)) hoi. thien van cam tuc xa hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((mang xa) OR (nang x)) hoi. thien van cam tuc xa hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach y ((mang xa) or (nang x)) hoi. thien van cam tuc xa hanh di cua tre*.