Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
xang ca » hang ca, tang ca, dang ca
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, vuc van
ca hoi » cau hoi, cua hoi, xa hoi
va cam » va cham, va cac, va cao
ve cua » le cua, de cua, ve cum
te cua » tue cua, le 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 ty xang ca hoi. hieu va cam xuc van hanh ((ve cua) or (te cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang ca hoi. hieu va cam xuc van hanh ((ve cua) OR (te cua)) tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty xang ca hoi. hieu va cam xuc van hanh ((ve cua) or (te cua)) tre*.