Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
sach ty » sach y, sach tu, sach thu
va hanh » va thanh, va danh, ban hanh
vu cham » va cham, vu kham, tu cham
vu sach » vu bach, su sach, vu khach
ve cham » va cham, ve chat, ve chim
xang ma » tang ma, nang ma, sang ma
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty xang ma hoi. hieu ((ve cham) or (vu cham)) luc ((va hanh) or (van hanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty xang ma hoi. hieu ((ve cham) OR (vu cham)) luc ((va hanh) OR (van hanh)) vi cua triet.
• Adding a wildcard symbol may retrieve word variants: vu sach ty xang ma hoi. hieu ((ve cham) or (vu cham)) luc ((va hanh) or (van hanh)) vi cua triet*.