Perhaps you should try some spelling variations:
tac quang » thac quang, tac quan, tai quang
doanh van » doan van, doanh va, doanh ban
sach tac » sach bac, sach tai, sach tham
quang xa » quan xa, quang ma, quang va
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
cham xuc » cam xuc, chat xuc, cham soc
danh vai » danh sai, danh va, dang van
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, te sach
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 tac quang xa hoi. hieu van cham xuc va ((danh vai) or (doanh van)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tac quang xa hoi. hieu van cham xuc va ((danh vai) OR (doanh van)) cau tren.
• Adding a wildcard symbol may retrieve word variants: tu sach tac quang xa hoi. hieu van cham xuc va ((danh vai) or (doanh van)) cau tren*.