Perhaps you should try some spelling variations:
tay lang » tai lang, tay tang, tay quang
te sach » toc sach
bat cua » ban cua, mat cua, bai cua
dan bat » danh bat, dan dat, dan ba
qua cac » cua cac
ty lang » ty xang, ty hang, tu lang
cua tre » cua te, cuu tre, cua triet
tac va » tac da, tac xa, tac ha
tuc va » thuc va, truc va, tuc xa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ty lang) or (tay lang)) xa hoi. hieu qua cac ((tac va) OR (tuc va)) dan bat cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty lang) OR (tay lang)) xa hoi. hieu qua cac ((tac va) OR (tuc va)) dan bat cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty lang) or (tay lang)) xa hoi. hieu qua cac ((tac va) OR (tuc va)) dan bat cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty lang) or (tay lang)) xa hoi. hieu qua cac ((tac va) OR (tuc va)) dan bat cua tre*.