Perhaps you should try some spelling variations:
tay nguoi » toc nguoi, dao nguoi
doanh van » doan van, doanh va, doanh ban
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, hieu ve
nguoi va » nguoi ma, nguoi tay, nguoi dao
te sach » toc sach
lang ha » long ha
danh va » doanh va, hanh va, anh va
y lang » o lang, _ lang, tay lang
ha hoi » hoa hoi, ha noi, xa hoi

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 y lang ha hoi. ((hieu van) OR (lieu va)) tay nguoi va ((doanh van) or (danh va)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y lang ha hoi. ((hieu van) OR (lieu va)) tay nguoi va ((doanh van) OR (danh va)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y lang ha hoi. ((hieu van) OR (lieu va)) tay nguoi va ((doanh van) or (danh va)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach y lang ha hoi. ((hieu van) OR (lieu va)) tay nguoi va ((doanh van) or (danh va)) cua triet*.