Perhaps you should try some spelling variations:
sach tham » sach nha
sach thu » sach thue, sach thieu, cach thuc
van hanh » van thanh, ban hanh, van anh
hanh va » hang va, hanh vi
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cuu tre » cua tre, cau tren, cau treo
va cuu » va cau, va chu, va huu

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 thu) or (sach tham)) ((nang xa) OR (nang ma)) hoi. lieu va cac xuc van hanh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach thu) OR (sach tham)) ((nang xa) OR (nang ma)) hoi. lieu va cac xuc van hanh va cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach thu) or (sach tham)) ((nang xa) OR (nang ma)) hoi. lieu va cac xuc van hanh va cuu tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach thu) or (sach tham)) ((nang xa) OR (nang ma)) hoi. lieu va cac xuc van hanh va cuu tre*.