Perhaps you should try some spelling variations:
phap thu » phap thuc, phap tu, phap che
vat hanh » vat thanh, van hanh, va hanh
hanh tai » thanh tai, hang tai, han tai
so sach » so sanh, bo sach, co sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
thu vat » thuc vat, thu va, thuat vat
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
hieu v » hieu va, hieu ve, hieu 2
v phap » va phap, ve phap, v pham
x hoi » xa hoi, o hoi, x ho

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 tu nang x hoi. hieu v phap thu vat hanh tai cua tre~.
• Adding a wildcard symbol may retrieve word variants: so sach tu nang x hoi. hieu v phap thu vat hanh tai cua tre*.