Perhaps you should try some spelling variations:
sinh hoat » sinh hoc, sinh vat
cua viet » ca viet, hoa viet, cua vat
minh hoa » minh hoang, trinh hoa, sinh hoc
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
luc va » duc va, tuc va, loc va
va cao » va co, va dao, va bao
ang xa » lang xa, mang xa, dang xay
ty ang » ty xang, ty hang, ty anh

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 ty ang xa hoi. hieu ((va cao) or (va cac)) luc va ((minh hoa) or (sinh hoat)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ang xa hoi. hieu ((va cao) OR (va cac)) luc va ((minh hoa) OR (sinh hoat)) cua viet.
• Adding a wildcard symbol may retrieve word variants: su sach ty ang xa hoi. hieu ((va cao) or (va cac)) luc va ((minh hoa) or (sinh hoat)) cua viet*.