Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
luoc van » luoc can, luoc va, luot van
thanh te » thanh ve, thanh de, thanh le
thanh va » thanh van, hanh va, thanh ha
te sach » toc sach
nang xa » nang x, lang xa, nang ma
luc van » luu van, duc van, luc va
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao

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