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
cam luc » cam xuc, cau luc
su sach » so sach
hieu va » lieu va, hieu qua
vu sach » vu bach, vu khach
ang xa » lang xa, mang xa, dang xay
luc va » duc va, tuc va, loc va
ty ang » ty xang, ty hang, ty anh
va cam » va cham, va cac, va cao

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) OR (vu sach)) ty ang xa hoi. hieu va cam luc va ((minh hoa) or (sinh hoat)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ty ang xa hoi. hieu va cam luc va ((minh hoa) OR (sinh hoat)) cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ty ang xa hoi. hieu va cam luc va ((minh hoa) or (sinh hoat)) cua viet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ty ang xa hoi. hieu va cam luc va ((minh hoa) or (sinh hoat)) cua viet*.