Perhaps you should try some spelling variations:
su sach » so sach, vu sach
so sanh » do sanh
xang ma » tang ma, nang ma, sang ma
cac luc » cau luc, coc luc, cac nuoc
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
ma hoi » mai hoi, xa hoi, ma hoa
luc va » duc va, tuc va, loc va
cua te » cua tu

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 (so sanh)) ty xang ma hoi. lieu va cac luc va hanh vi ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) ty xang ma hoi. lieu va cac luc va hanh vi ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) ty xang ma hoi. lieu va cac luc va hanh vi ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) ty xang ma hoi. lieu va cac luc va hanh vi ((cua tre) OR (cua te))*.