Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
te sach » toc sach
danh di » danh du, xanh di, danh dien
hanh di » hanh de, hang di, xanh di
tuc van » thuc van, truc van, tuc va
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao

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 nang xa hoi. hieu va cam tuc van ((((hanh di) OR (danh di))) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu nang xa hoi. hieu va cam tuc van ((((hanh di) OR (danh di))) OR (hanh vi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thu nang xa hoi. hieu va cam tuc van ((((hanh di) OR (danh di))) or (hanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach thu nang xa hoi. hieu va cam tuc van ((((hanh di) OR (danh di))) or (hanh vi)) cua tre*.