Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
thanh ve » hanh ve, thanh va, thanh vien
te sach » toc sach
cao hoi » cau hoi, co hoi, cao hoc
luc van » luoc van, luu van, luc va
duc van » duc va, duc tan, duc manh
te sac » te cac, te san
ve cua » le cua, de cua, te cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sac) or (te sach)) ky nang cao hoi. thien van nam ((luc van) OR (duc van)) thanh ve cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te sach)) ky nang cao hoi. thien van nam ((luc van) OR (duc van)) thanh ve cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) or (te sach)) ky nang cao hoi. thien van nam ((luc van) OR (duc van)) thanh ve cua triet".
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (te sach)) ky nang cao hoi. thien van nam ((luc van) OR (duc van)) thanh ve cua triet*.