Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang van » hoang van, hang va
danh vai » danh sai, danh va, doanh van
toc sach » hoc sach, doc sach, thuoc sach
hieu ve » hieu va, hieu van
cac luc » cau luc, cac nuoc, cac cuoc
va danh » va dinh, va dan, va hanh
nang ma » tang ma, sang ma, nang cao
vai cua » dai cua, hai cua, lai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach y ((nang ma) or (dang van)) hoi. hieu ve ((cac luc) or (coc luc)) va danh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y ((nang ma) OR (dang van)) hoi. hieu ve ((cac luc) OR (coc luc)) va danh vai cua triet.
• Adding a wildcard symbol may retrieve word variants: toc sach y ((nang ma) or (dang van)) hoi. hieu ve ((cac luc) or (coc luc)) va danh vai cua triet*.