Perhaps you should try some spelling variations:
cau theo » cau thi, cau tao
doan van » doan va, hoang van, luan van
danh vai » danh sai, danh va, doanh van
tay tang » tay lang, tay trung, tay quang
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
ty tang » ty xang, ty hang, ky tang
xuc va » duc va, tuc va, luc va
ve cam » ve cham, ve cac, va cam

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 tang) or (tay tang)) xa hoi. hieu ve cam xuc va ((danh vai) or (doan van)) cau theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty tang) OR (tay tang)) xa hoi. hieu ve cam xuc va ((danh vai) OR (doan van)) cau theo.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty tang) or (tay tang)) xa hoi. hieu ve cam xuc va ((danh vai) or (doan van)) cau theo*.