Perhaps you should try some spelling variations:
sach thi » sach thu, sach tai, sach thieu
thi hang » thi hanh, thi nang, thi hong
hieu van » hieu va, thien van, lieu va
luc ngan » luc nganh, luc nhan, luat ngan
dau tren » dat tren, dau tieng, dau trong
dau tien » van tien
te sach » toc sach
hang xa » hoang xa, hang ca, lang xa
hieu ve » hieu va
cam luc » cam xuc, cau luc

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 thi hang xa hoi. ((hieu ve) or (hieu van)) cam luc ngan hang va ((dau tren) OR (dau tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thi hang xa hoi. ((hieu ve) OR (hieu van)) cam luc ngan hang va ((dau tren) OR (dau tien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thi hang xa hoi. ((hieu ve) or (hieu van)) cam luc ngan hang va ((dau tren) OR (dau tien))".
• Adding a wildcard symbol may retrieve word variants: te sach thi hang xa hoi. ((hieu ve) or (hieu van)) cam luc ngan hang va ((dau tren) OR (dau tien))*.