Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
lam duoc » nam duoc, luat duoc, lam thuoc
va nang » van nang, da nang, cam nang
duoc va » nuoc va, duc va, duoc ma
sach tu » sach thu, cach tu, sach uu
van lam » van nam
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach thu, xach tay
va cua » va chua, via cua, ma cua
ca cua » co cua

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 tu) OR (sach ty)) lang xa hoi. hieu van lam duoc va nang ((va cua) or (ca cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tu) OR (sach ty)) lang xa hoi. hieu van lam duoc va nang ((va cua) OR (ca cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach tu) OR (sach ty)) lang xa hoi. hieu van lam duoc va nang ((va cua) or (ca cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach tu) OR (sach ty)) lang xa hoi. hieu van lam duoc va nang ((va cua) or (ca cua)) tre*.