Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
sach thi » sach thu, sach tai, sach thieu
thi nang » thi cong, ki nang, thi hanh
cau treo » cau theo, cau triet, cau trieu
danh vai » danh sai, danh va, doanh van
hieu van » hieu va, thien van, lieu va
va danh » va dinh, va dan, va hanh
tu sach » thu sach, su sach, te sach
hieu ve » hieu va
nang xa » nang x, lang xa, nang ma
xuc va » duc va, tuc va, luc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach thi nang xa hoi. ((hieu ve) or (hieu van)) cam xuc va danh vai ((cau treo) OR (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thi nang xa hoi. ((hieu ve) OR (hieu van)) cam xuc va danh vai ((cau treo) OR (cau tren))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thi nang xa hoi. ((hieu ve) or (hieu van)) cam xuc va danh vai ((cau treo) OR (cau tren))*".