Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
minh via » minh va, minh vua, minh giao
hieu van » hieu va, thien van, lieu va
via cua » gia cua, gian cua, giau cua
sach ty » sach y, sach tu, sach thu
nang xa » lang xa, nang ma, mang xa
cac lo » cac lop, cac bo, cac ho
cac co » cac cong
cua te » cua tu

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 ty ((nang xa) OR (nang x)) hoi. hieu van ((cac lo) or (cac co)) van minh via cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((nang xa) OR (nang x)) hoi. hieu van ((cac lo) OR (cac co)) van minh via cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty ((nang xa) OR (nang x)) hoi. hieu van ((cac lo) or (cac co)) van minh via cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((nang xa) OR (nang x)) hoi. hieu van ((cac lo) or (cac co)) van minh via cua te*.