Perhaps you should try some spelling variations:
sang lap » sang tao, sang ma, sang tai
hanh vai » hanh vi, hanh va, hanh tai
hang tai » hang va, dung tai
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ve cam » ve cham, ve cac, va cam
xuc va » tuc va, luc va, xac 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 lap) or (hang tai)) hai. hieu ve cam ((xuc va) OR (duc va)) hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((sang lap) OR (hang tai)) hai. hieu ve cam ((xuc va) OR (duc va)) hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((sang lap) or (hang tai)) hai. hieu ve cam ((xuc va) OR (duc va)) hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((sang lap) or (hang tai)) hai. hieu ve cam ((xuc va) OR (duc va)) hanh vai cua te*.