Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
chat tuc » chat xuc, luat tuc, chat huu
cau treo » cau theo, cau tren, cau triet
dua tren » dung tren
nang xa » nang x, lang xa, nang ma
va chat » van chat, va phat, cao chat
xa hanh » xa thanh, xa khanh, va hanh
cu tren » tu tren
y nang » ky nang, ly nang, v nang

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 y nang xa hoi. lieu va chat tuc xa hanh vi ((cau treo) or (((cu tren) OR (dua tren))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang xa hoi. lieu va chat tuc xa hanh vi ((cau treo) OR (((cu tren) OR (dua tren)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang xa hoi. lieu va chat tuc xa hanh vi ((cau treo) or (((cu tren) OR (dua tren))))".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang xa hoi. lieu va chat tuc xa hanh vi ((cau treo) or (((cu tren) OR (dua tren))))*.