Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ve cac » va cac, vien cac
tu may » tu ma, ty may, tu mai
y lang » o lang, _ lang, tay lang
tu cay » tu cac, tu can
vi cau » ve cau, di cau, viet cau
va cau » van cau, va cac, va dau

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 y lang xa hoi. hieu ve cac ((tu may) OR (tu cay)) tinh ((vi cau) or (va cau)) treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y lang xa hoi. hieu ve cac ((tu may) OR (tu cay)) tinh ((vi cau) OR (va cau)) treo*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y lang xa hoi. hieu ve cac ((tu may) OR (tu cay)) tinh ((vi cau) or (va cau)) treo*".