Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
ve triet » va trien, su triet
trung va » truong va, trang va, trung ha
truc va » thuc va, thuc vat
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
sai ky » sac ky
van ve » van de, ban ve, van le
va cau » van cau, va cac, 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: tu ((sach ty) or (sai ky)) nang xa hoi. hieu va cau ((truc va) OR (trung va)) thanh van ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sai ky)) nang xa hoi. hieu va cau ((truc va) OR (trung va)) thanh van ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sai ky)) nang xa hoi. hieu va cau ((truc va) OR (trung va)) thanh van ve triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sai ky)) nang xa hoi. hieu va cau ((truc va) OR (trung va)) thanh van ve triet*.