Perhaps you should try some spelling variations:
chau tre » chay tren, chau tho, cho tre
hanh lai » hanh lam, hanh tai, thanh lap
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
tang ma » mang may, tang van
sang ma » nang ma, sang tao, mang may
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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 ky ((sang ma) OR (tang ma)) hoi. hieu ve cam ((xuc va) or (tuc va)) hanh lai chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((sang ma) OR (tang ma)) hoi. hieu ve cam ((xuc va) OR (tuc va)) hanh lai chau tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((sang ma) OR (tang ma)) hoi. hieu ve cam ((xuc va) or (tuc va)) hanh lai chau tre*".