Perhaps you should try some spelling variations:
su sach » so sach, vu sach
cam luc » cam xuc, cau luc
ky sang » ky dang, ky tang, duy sang
lap hai » lap tai, lap lai, lap hoat
hieu ve » hieu van
danh vi » hanh vi, dinh vi, danh di
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
vi cua » vai cua, di cua
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 ((ky sang) or (ky nang)) lap hai. ((hieu ve) OR (hieu va)) cam luc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky sang) OR (ky nang)) lap hai. ((hieu ve) OR (hieu va)) cam luc va danh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky sang) or (ky nang)) lap hai. ((hieu ve) OR (hieu va)) cam luc va danh vi cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky sang) or (ky nang)) lap hai. ((hieu ve) OR (hieu va)) cam luc va danh vi cua te*.