Perhaps you should try some spelling variations:
duoc tang » duc tang, duoc thanh, duoc trong
thanh lap » phan lap, thanh hai, thanh van
sach duoc » sach nuoc, sach dao, sach dung
pham duy » pham duc
te sach » toc sach
duy gia » duy gian, duc gia, quy gia
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, ma hoa, me hoi

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