Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
cua triet » cua viet, su triet, va triet
sang tao » hang tai
te sach » toc sach
ky sang » ky nang, ky dang, ky tang
tao hoi » tao khoi, tao boi, tay hoi
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
sach ky » sac ky, sach y, sach ty
soc va » hoc va, loc va, goc va
doc va » duoc va, hoc va, duc va
cua te » cua tu

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 ky sang tao hoi. hieu ve chat ((soc va) OR (doc va)) thanh lap ((cua triet) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky sang tao hoi. hieu ve chat ((soc va) OR (doc va)) thanh lap ((cua triet) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky sang tao hoi. hieu ve chat ((soc va) OR (doc va)) thanh lap ((cua triet) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: te sach ky sang tao hoi. hieu ve chat ((soc va) OR (doc va)) thanh lap ((cua triet) or (cua te))*.