Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
thanh dai » thanh hai, thanh tai, thanh oai
toc sach » hoc sach, doc sach, thuoc sach
hieu va » lieu va, hieu qua
hang xa » hoang xa, hang va, hang ca
ty hang » ly hang, ty xang, thi hang
va nam » van nam, ha nam, va nay
cua te » cua tu

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) or (toc sach)) ty hang xa hoi. hieu va nam cua ban ((thanh dai) or (thanh dat)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty hang xa hoi. hieu va nam cua ban ((thanh dai) OR (thanh dat)) cua te.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ty hang xa hoi. hieu va nam cua ban ((thanh dai) or (thanh dat)) cua te*.