Perhaps you should try some spelling variations:
sang lap » sang tao, sang ma, sang tai
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
ve cam » ve cham, ve cac, va cam
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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 (dung tai)) hai. hieu ve cam xuc van hanh ((vi cua) or (di cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((sang lap) OR (dung tai)) hai. hieu ve cam xuc van hanh ((vi cua) OR (di cua)) te.
• Adding a wildcard symbol may retrieve word variants: su sach ky ((sang lap) or (dung tai)) hai. hieu ve cam xuc van hanh ((vi cua) or (di cua)) te*.