Perhaps you should try some spelling variations:
su sach » so sach
cac chu » cac thu, cac khu, ca chu
vu sach » vu bach, vu khach
tinh vi » trinh vi, tinh voi, tinh va
hieu ve » hieu va, hieu van
cac che » cac he, cac chien, cac chat
vi cua » vai cua, di cua
van xa » van xay, van ha, dan xa
ly van » le van, ly va, ly von
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: ((su sach) or (vu sach)) ly van xa hoi. hieu ve ((cac chu) OR (cac che)) may tinh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ly van xa hoi. hieu ve ((cac chu) OR (cac che)) may tinh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ly van xa hoi. hieu ve ((cac chu) OR (cac che)) may tinh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ly van xa hoi. hieu ve ((cac chu) OR (cac che)) may tinh vi cua te*.