Perhaps you should try some spelling variations:
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
va tinh » may tinh
vi cua » vai cua, di cua
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 lang xa hoi. lieu va cac nuoc ((va tinh) or (lap trinh)) vi cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty lang xa hoi. lieu va cac nuoc ((va tinh) OR (lap trinh)) vi cua su.
• Adding a wildcard symbol may retrieve word variants: tu sach ty lang xa hoi. lieu va cac nuoc ((va tinh) or (lap trinh)) vi cua su*.