Perhaps you should try some spelling variations:
tinh hai » tinh thai, tinh chat, trinh han
thu hang » thi hang, thuc hanh, thu huong
tu sach » thu sach, su sach, te sach
va cham » va chat, va tham
hai cua » thai cua, dai cua, hoi cua
va tinh » may tinh
cua tre » cua te, cuu tre, cua triet
tu hung » tu chung, tu nhung, tu vung
va cam » va cac, va cao, va cai

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 ((tu hung) or (thu hang)) xa hoi. hieu ((va cam) or (va cham)) duc va tinh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tu hung) OR (thu hang)) xa hoi. hieu ((va cam) OR (va cham)) duc va tinh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((tu hung) or (thu hang)) xa hoi. hieu ((va cam) or (va cham)) duc va tinh hai cua tre*.