Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
sach nay » sach hay, sach vay, sach nang
van manh » van minh, van anh, van hanh
nay lang » nam lang, tay lang, nhan lang
xuc van » duc van, luc van, vuc van
lang xa » lang ha, dang xay, lang van
ve cai » va cai, ve cac, ve tai
hai ve » hoai ve, hai vu, hoi ve
hai va » hai van, thai va, hoi va
va cam » va cham, va cac, va cao

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach nay lang xa hoi. hieu ((ve cai) OR (va cam)) xuc van manh ((hai ve) OR (hai va)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach nay lang xa hoi. hieu ((ve cai) or (va cam)) xuc van manh ((hai ve) OR (hai va)) triet~".
• Adding a wildcard symbol may retrieve word variants: thuoc sach nay lang xa hoi. hieu ((ve cai) or (va cam)) xuc van manh ((hai ve) OR (hai va)) triet*.