Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nhan tuc » nhan thuc, nhan luc, nhanh thuc
cau tren » cu tren, dau tren, ca tren
mang xa » lang xa, mang may, dang xay
nang ma » tang ma, sang ma, nang cao
va nhan » van nhan, ca nhan, va phan
va tinh » may tinh
tinh va » tich va, trinh van, trinh vat
tuc va » thuc va, truc va, tuc xa
va cau » van cau, va cac, va dau

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 ma)) hoi. lieu va nhan tuc va tinh va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((mang xa) OR (nang ma)) hoi. lieu va nhan tuc va tinh va cau tren*.