Perhaps you should try some spelling variations:
nhan dang » nhan dan, phan dang, tran dang
thu sach » tu sach, thuat sach, thuoc sach
dang voi » dang noi, dang loi, dong voi
luc nhan » luc nhat, cu nhan, tue nhan
dat tren » dat trong, dua tren
thi nang » thi cong, ki nang, thi hanh
thu nang » thu hang, thu bang, tho nang
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam luc » cam xuc, cau luc
voi dat » hoi dat, noi dat, voi dac

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