Perhaps you should try some spelling variations:
thien van » thi van
tinh dai » trinh dai, tinh da, tinh hai
tu sach » thu sach, su sach, te sach
va tinh » may tinh
cua tre » cua te, cuu tre, cua triet
y lang » o lang, tay lang, yen lang
_ lang » o lang, _ land
van am » van nam, van lam, van dam
am hoc » ad hoc

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((y lang) OR (_ lang)) xa hoi. thien van am hoc va tinh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y lang) OR (_ lang)) xa hoi. thien van am hoc va tinh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y lang) OR (_ lang)) xa hoi. thien van am hoc va tinh dai cua tre*.