Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh dat » thanh san, thanh hai, thanh van
hanh dao » lanh dao, thanh dam, doanh dao
toc sach » hoc sach, doc sach, thuoc sach
hieu va » hieu qua
lang xa » lang ha, dang xay, lang van
sach 2 » sach y
xuc va » duc va, tuc va, luc va
2 lang » 22 lang, o lang, _ lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach 2 lang xa hoi. ((hieu va) or (lieu va)) cam xuc va ((hanh dao) OR (thanh dat)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach 2 lang xa hoi. ((hieu va) OR (lieu va)) cam xuc va ((hanh dao) OR (thanh dat)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach 2 lang xa hoi. ((hieu va) or (lieu va)) cam xuc va ((hanh dao) OR (thanh dat)) cua triet".
• Adding a wildcard symbol may retrieve word variants: toc sach 2 lang xa hoi. ((hieu va) or (lieu va)) cam xuc va ((hanh dao) OR (thanh dat)) cua triet*.