Perhaps you should try some spelling variations:
tay quang » tac quang, tai quang, tao quang
manh thai » manh hai, anh thai, manh khai
tay lang » tai lang, tay tang, tham lang
thai cua » than cua, tai cuc, tri cua
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
xuc va » tuc va, luc va, xac 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 ((tay lang) OR (tay quang)) xa hoi. hieu ve cam ((xuc va) or (duc va)) manh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tay lang) OR (tay quang)) xa hoi. hieu ve cam ((xuc va) OR (duc va)) manh thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((tay lang) OR (tay quang)) xa hoi. hieu ve cam ((xuc va) or (duc va)) manh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((tay lang) OR (tay quang)) xa hoi. hieu ve cam ((xuc va) or (duc va)) manh thai cua tre*.