Perhaps you should try some spelling variations:
thuc dan » thuc hanh, thuc vat
sach xu » sach xa, cach xu, mach xu
hai cua » thai cua, hoi cua, lai cua
so sach » so sanh, bo sach, co sach
va pham » van pham, va phat, va phap
hieu va » lieu va, hieu qua
lang ha » long ha
xu lang » cu lang, tu lang, xu dang
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach xu lang ha hoi. hieu va pham ((thuc dan) or (hoc dan)) hanh ((hai cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach xu lang ha hoi. hieu va pham ((thuc dan) OR (hoc dan)) hanh ((hai cua) OR (dai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: so sach xu lang ha hoi. hieu va pham ((thuc dan) or (hoc dan)) hanh ((hai cua) or (dai cua)) tre*.