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
tang ma » mang may, tang van
ve che » va che, ke che, de che
y tang » ky tang, 6 tang, 7 tang
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 tang 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 tang 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 tang ma hoa. hieu ((ve chet) or (ve che)) duc va hanh lai cua te*.