Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cap nuoc » dat nuoc
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
van cap » van cau, van dap, van ca
ty ang » ty xang, ty hang, ty anh
ang xa » lang xa, mang xa, dang xay
cua tu » cua tuc, cua cu, cua te
cua su » qua su

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 ang xa hoi. hieu van cap nuoc ((va tinh) or (may tinh)) vi ((cua tu) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ang xa hoi. hieu van cap nuoc ((va tinh) OR (may tinh)) vi ((cua tu) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty ang xa hoi. hieu van cap nuoc ((va tinh) or (may tinh)) vi ((cua tu) or (cua su))*.