Perhaps you should try some spelling variations:
chau tre » chay tren, chau tho, cho tre
thu sang » thu san, thu bang, thu dang
hanh lai » hanh lam, hanh tai, thanh lap
thu hang » thi hang, thuc hanh, thu huong
ve chat » van chat
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
va chat » van chat, va phat, cao chat
tao hoi » tao khoi, tao boi, tay hoi

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 ((thu sang) OR (thu hang)) tao hoi. hieu ((va chat) or (ve chat)) duc va hanh lai chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thu sang) OR (thu hang)) tao hoi. hieu ((va chat) OR (ve chat)) duc va hanh lai chau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((thu sang) OR (thu hang)) tao hoi. hieu ((va chat) or (ve chat)) duc va hanh lai chau tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((thu sang) OR (thu hang)) tao hoi. hieu ((va chat) or (ve chat)) duc va hanh lai chau tre*.