Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
danh vai » danh sai, danh va, doanh van
nang xa » nang x, lang xa, nang ma
thi van » thi lan, thi hanh, thi nang
va danh » va dinh, va dan, va hanh
cua tre » cuu tre, cua triet, dua tren
xuc va » duc va, tuc va, luc va
cua te » cua tu

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