Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
dua tren » dung tren
hanh lai » hanh lam, hanh tai, thanh lap
sang ma » tang ma, nang ma, sang tao
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
cua te » cua tu
tuc va » thuc va, truc va, tuc xa
y sang » _ sang, duy sang
xuc va » duc va, luc va, xac va
ma hoi » mai hoi, xa hoi, ma hoa

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 y sang ma hoi. hieu ve cham ((xuc va) OR (tuc va)) hanh lai ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y sang ma hoi. hieu ve cham ((xuc va) OR (tuc va)) hanh lai ((dua tren) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y sang ma hoi. hieu ve cham ((xuc va) OR (tuc va)) hanh lai ((dua tren) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: thu sach y sang ma hoi. hieu ve cham ((xuc va) OR (tuc va)) hanh lai ((dua tren) or (cua te))*.