Perhaps you should try some spelling variations:
sang lap » sang ma, sang tai, dan lap
dang hai » dang khai, hang hai, dung hai
danh hai » lanh hai, manh hai, danh hau
sang tao » hang tai
so sach » so sanh, bo sach, co sach
cam luc » cam xuc, cau luc
cua tuc » cua duc, cua tu, cua thuoc
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
luc va » duc va, tuc va, loc va
ve cam » ve cham, ve cac, va cam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky ((sang lap) or (sang tao)) hai. hieu ve cam luc va ((danh hai) OR (dang hai)) cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky ((sang lap) OR (sang tao)) hai. hieu ve cam luc va ((danh hai) OR (dang hai)) cua tuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky ((sang lap) or (sang tao)) hai. hieu ve cam luc va ((danh hai) OR (dang hai)) cua tuc".
• Adding a wildcard symbol may retrieve word variants: so sach ky ((sang lap) or (sang tao)) hai. hieu ve cam luc va ((danh hai) OR (dang hai)) cua tuc*.