Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
thu bang » thu ban, thu hang, chu bang
te sach » toc sach
hanh di » hanh de, hang di, danh di
luc van » luoc van, luu van, duc van
cam luc » cam xuc, cau luc
hieu va » lieu va
bang x » nang x, bang _, bang 2
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach thu bang x hoi. ((hieu va) OR (hieu qua)) cam luc van ((hanh di) or (hanh vi)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu bang x hoi. ((hieu va) OR (hieu qua)) cam luc van ((hanh di) OR (hanh vi)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thu bang x hoi. ((hieu va) OR (hieu qua)) cam luc van ((hanh di) or (hanh vi)) cua te".
• Adding a wildcard symbol may retrieve word variants: te sach thu bang x hoi. ((hieu va) OR (hieu qua)) cam luc van ((hanh di) or (hanh vi)) cua te*.