Perhaps you should try some spelling variations:
thien van » thi van
sach duy » sach duoc, sach dao, sach dat
chau tre » chay tren, chau tho, cho tre
cam duc » cam xuc, cao duc, nam duoc
dan lai » dan loai, dan lap, dan lat
can xa » canh xa, can da, can va
va dan » ca dan, va dao, va dau

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 duy) or (sach dung)) can xa hoi. thien van ((cam duc) OR (pham duc)) va dan lai chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach duy) OR (sach dung)) can xa hoi. thien van ((cam duc) OR (pham duc)) va dan lai chau tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach duy) or (sach dung)) can xa hoi. thien van ((cam duc) OR (pham duc)) va dan lai chau tre*".