Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cua triet » cua viet, su triet, va triet
chat duc » chat xuc, chat doc, chet duoc
va thanh » gia thanh, va tinh, le thanh
te sach » toc sach
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
hoi cua » hoi chuc
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang

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) or (v nang)) xa hoi. hieu ve chat duc ((va thanh) OR (ban thanh)) hoi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (v nang)) xa hoi. hieu ve chat duc ((va thanh) OR (ban thanh)) hoi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) or (v nang)) xa hoi. hieu ve chat duc ((va thanh) OR (ban thanh)) hoi cua triet*".