Perhaps you should try some spelling variations:
thanh lam » thanh lap, hanh lam, thanh nam
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
sang xa » song xa, lang xa, sang ma
lam cua » nam cua, lam chat
cua tre » cua te, cuu tre, cua triet
y sang » _ sang, duy sang

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) OR (toc sach)) y sang xa hoi. hieu van ((pham duy) or (pham duc)) gia thanh lam cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y sang xa hoi. hieu van ((pham duy) OR (pham duc)) gia thanh lam cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) y sang xa hoi. hieu van ((pham duy) or (pham duc)) gia thanh lam cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) y sang xa hoi. hieu van ((pham duy) or (pham duc)) gia thanh lam cua tre*.