Perhaps you should try some spelling variations:
sach ty » sach tu, sach thu, xach tay
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
cam lo » nam lo, cam ly, cam o
va cua » va chua, via cua, ca cua
lo va » lo van, lao va, ly va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (sach y)) lang xa hoi. hieu va cam lo va hanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) lang xa hoi. hieu va cam lo va hanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach y)) lang xa hoi. hieu va cam lo va hanh va cua tre*.