Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
tham tuc » tham thuc, thai tuc, nham thuc
cau tren » cu tren, dau tren, ca tren
nang xa » nang x, lang xa, nang ma
sang ma » tang ma, nang ma, sang tao
va tham » van tham, va cham, va thanh
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
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 ((nang xa) or (sang ma)) hoi. lieu va tham tuc va hanh va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((nang xa) OR (sang ma)) hoi. lieu va tham tuc va hanh va cau tren*.