Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
nang ma » tang ma, sang ma, nang cao
va pham » van pham, va phat, va phap
va hang » van hang, va nang, va hanh
va lang » va nang, hoa lang
hoi cua » hoi chuc
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa

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) or (hoc sach)) y nang ma hoi. lieu va pham duc ((va hang) OR (va lang)) hoi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) y nang ma hoi. lieu va pham duc ((va hang) OR (va lang)) hoi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (hoc sach)) y nang ma hoi. lieu va pham duc ((va hang) OR (va lang)) hoi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc sach)) y nang ma hoi. lieu va pham duc ((va hang) OR (va lang)) hoi cua triet*.