Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
hanh lai » hanh lam, hanh tai, thanh lap
tu sach » su sach, te sach, tu cach
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
ve chet » ve chat, se chet
sang ma » tang ma, nang ma, sang tao
ve che » va che, ke che, de che
y sang » _ sang, duy sang
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: ((tu sach) OR (thu sach)) y sang ma hoa. hieu ((ve chet) or (ve che)) duc va hanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y sang ma hoa. hieu ((ve chet) OR (ve che)) duc va hanh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) y sang ma hoa. hieu ((ve chet) or (ve che)) duc va hanh lai cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) y sang ma hoa. hieu ((ve chet) or (ve che)) duc va hanh lai cua te*.