Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh sai » dung sai, danh bat, danh dau
danh va » doanh va, hanh va, anh va
lam duc » lam duoc, pham duc, nam duoc
hieu va » lieu va, hieu qua
te sach » toc sach
hoa hoi » khoa hoi, hoa hoc, hoa doi
y lang » o lang, _ lang, tay lang
ha hoi » ha noi, xa hoi, va hoi
va lam » van lam, va lap

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