Perhaps you should try some spelling variations:
thien dinh » thien danh, thien minh, thien tinh
dat quoc » dat nuoc, dat duoc, dan quoc
dinh dat » dinh ket, dinh van, dinh lam
tu sach » thu sach, su sach, te sach
ly hang » ly quang
ty hang » ty xang, thi hang, thu hang
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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 ((ty hang) or (ly hang)) xa hoi. thien dinh dat quoc ((va tinh) OR (may tinh)) vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty hang) OR (ly hang)) xa hoi. thien dinh dat quoc ((va tinh) OR (may tinh)) vi cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty hang) or (ly hang)) xa hoi. thien dinh dat quoc ((va tinh) OR (may tinh)) vi cua tu".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty hang) or (ly hang)) xa hoi. thien dinh dat quoc ((va tinh) OR (may tinh)) vi cua tu*.