Perhaps you should try some spelling variations:
tinh hai » tinh thai, tinh chat, trinh han
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
va tinh » may tinh
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
y lang » o lang, _ lang, tay lang
am hoc » ad hoc
ve am » va am

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y lang xa hoi. hieu ve am hoc va tinh hai ((cua tre) OR (cuu tre))~.
• Adding a wildcard symbol may retrieve word variants: tu sach y lang xa hoi. hieu ve am hoc va tinh hai ((cua tre) or (cuu tre))*.