Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
thuc va » thuc vat, thuc dan, thuc day
cua tre » cuu tre, cua triet, dua tren
sach ty » sach y, sach tu, sach thu
ha thuc » va thuc, ha thuy, ha thu
van ha » van hoa, van chat, van hanh
sac ky » cac ky, sai ky
cua te » cua tu
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: vu ((sach ty) or (sac ky)) nang x hoi. hieu van ha thuc va thanh va ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ty) OR (sac ky)) nang x hoi. hieu van ha thuc va thanh va ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: vu ((sach ty) or (sac ky)) nang x hoi. hieu van ha thuc va thanh va ((cua tre) or (cua te))*.