Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh soc » thanh son, nhanh soc, thanh hoc
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
va hanh » van hanh, va danh, ban hanh
sach ky » sach y, sach ty, sach kem
dang xa » dang xay, lang xa, dang ha
cuu tre » cua tre, cau tren, cau treo
sac ky » cac ky, sai ky
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ky) or (sac ky)) dang xa hoi. hieu van thanh soc ((va hanh) OR (va thanh)) vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sac ky)) dang xa hoi. hieu van thanh soc ((va hanh) OR (va thanh)) vi cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sac ky)) dang xa hoi. hieu van thanh soc ((va hanh) OR (va thanh)) vi cuu tre*".