Perhaps you should try some spelling variations:
thien van » thi van
vu triet » su triet, ve triet, va triet
sach thu » sach thue, sach thieu, sach tham
dan hai » doan hai, dang hai, dan khai
truc va » thuc va, thuc vat, trung va
sach tu » cach tu, sach ty, sach uu
nang xa » nang x, lang xa, nang ma
van hoc » van hoa
tuc va » thuc va, tuc xa, duc va
hai vu » hai va

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 tu) OR (sach thu)) nang xa hoi. thien van hoc ((tuc va) or (truc va)) dan hai vu triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tu) OR (sach thu)) nang xa hoi. thien van hoc ((tuc va) OR (truc va)) dan hai vu triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach tu) OR (sach thu)) nang xa hoi. thien van hoc ((tuc va) or (truc va)) dan hai vu triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach tu) OR (sach thu)) nang xa hoi. thien van hoc ((tuc va) or (truc va)) dan hai vu triet*.