Perhaps you should try some spelling variations:
dau tren » dau tien, dat tren, dau tieng
hanh vai » hanh vi, hanh tai, hanh van
cau tren » cu tren, ca tren, cau treo
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
cham xuc » cam xuc, chat xuc, cham soc
hanh va » hang va, hanh vi
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
xuc va » duc va, tuc va, luc va
xang x » nang x
x hoi » xa hoi, o hoi, x ho

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 ty xang x hoi. hieu van cham xuc va ((hanh vai) OR (hanh va)) ((cau tren) or (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty xang x hoi. hieu van cham xuc va ((hanh vai) OR (hanh va)) ((cau tren) OR (dau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty xang x hoi. hieu van cham xuc va ((hanh vai) OR (hanh va)) ((cau tren) or (dau tren))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty xang x hoi. hieu van cham xuc va ((hanh vai) OR (hanh va)) ((cau tren) or (dau tren))*.