Perhaps you should try some spelling variations:
phang tdong » phan dong, phan tong, phan trong
giai phang » giai phong, gioi phang, giai phap
tdong tin » thong tin, dong tin, trong tin
can dong » van dong, cao dong, cau dong
dan dong » van dong, dan dung, dao dong
bo sach » co sach, hoc sach
ve giai » va giai, ve giao, de giai
tu sach » thu sach, su sach, te sach
nha ve » nhat ve, nhan ve, nha va

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( bo sach nha ve giai phang tdong tin ) or ( tu sach nha ve giai ((can dong) OR (dan dong)) tin ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( bo sach nha ve giai phang tdong tin ) OR ( tu sach nha ve giai ((can dong) OR (dan dong)) tin )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( bo sach nha ve giai phang tdong tin ) or ( tu sach nha ve giai ((can dong) OR (dan dong)) tin ))".
• Adding a wildcard symbol may retrieve word variants: (( bo sach nha ve giai phang tdong tin ) or ( tu sach nha ve giai ((can dong) OR (dan dong)) tin ))*.