Perhaps you should try some spelling variations:
gianh lai » gian lan
thu sach » tu sach, thuat sach, thuoc sach
va gianh » va gian, van giang, va giai
lang phi » lang phu, lang chai, lang ha
phi khoa » nhi khoa, phu khoa, chi khoa
lai cua » dai cua, hai cua, lai chau
ve cham » va cham, ve chat, vu cham
ky lang » ky nang, ky dang, ky tang
so sach » so sanh, bo sach, co sach
cua tre » cua te, cuu tre, cua triet
va cao » va cac, va co, va dao
loc va » hoc va, luc va

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) or (so sach)) ky lang phi khoa. hieu ((ve cham) or (va cao)) loc va gianh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (so sach)) ky lang phi khoa. hieu ((ve cham) OR (va cao)) loc va gianh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (so sach)) ky lang phi khoa. hieu ((ve cham) or (va cao)) loc va gianh lai cua tre*.