Perhaps you should try some spelling variations:
xanh hanh » danh thanh, ban hanh, van hanh
thu sach » tu sach, thuat sach, thuoc sach
hanh tai » thanh tai, hang tai, han tai
dua tren » dung tren
suc xanh » suc manh, suc canh, tuoc xanh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
sach ky » sac ky, sach y, sach ty
ve cac » va cac, vien cac
ve cao » va cao, ve bao, ve co
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky lang xa hoi. hieu ((ve cao) OR (ve cac)) suc xanh hanh tai ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky lang xa hoi. hieu ((ve cao) OR (ve cac)) suc xanh hanh tai ((dua tren) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky lang xa hoi. hieu ((ve cao) OR (ve cac)) suc xanh hanh tai ((dua tren) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: thu sach ky lang xa hoi. hieu ((ve cao) OR (ve cac)) suc xanh hanh tai ((dua tren) or (cua te))*.