Perhaps you should try some spelling variations:
sach tham » sach nha
tham nang » nham nang, tham lang, tham nhung
danh dinh » dang dinh, anh dinh, danh vinh
cau tren » cu tren, dau tren, ca tren
cuu tre » cua tre, cau treo
va danh » va dinh, va dan, va hanh
te sach » toc sach
cac thu » cach thuc, cac thoi
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma

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