Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dinh lap » dinh lam, trinh lap, dinh lang
dinh lai » dinh lam, dinh tai, dinh hai
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
te sach » toc sach
sach ky » sac ky, sach y, sach ty
song xa » song cua
sang xa » lang xa, sang ma, mang xa
cua tre » cua te, cuu tre, cua triet

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 ((sang xa) OR (song xa)) hoi. hieu van cam duc va ((dinh lai) or (dinh lap)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((sang xa) OR (song xa)) hoi. hieu van cam duc va ((dinh lai) OR (dinh lap)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((sang xa) OR (song xa)) hoi. hieu van cam duc va ((dinh lai) or (dinh lap)) cua tre*".