Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
hanh cua » manh cua, hang cua, hanh sua
va hanh » van hanh, va thanh, va danh
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
ve cham » ve chat, vu cham, ve chim
nang ma » tang ma, sang ma, nang cao
va cham » va chat, va tham
loc va » hoc va, luc va
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: vu sach ky nang ma hoi. hieu ((ve cham) or (va cham)) loc va hanh cua ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang ma hoi. hieu ((ve cham) OR (va cham)) loc va hanh cua ((cua triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang ma hoi. hieu ((ve cham) or (va cham)) loc va hanh cua ((cua triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang ma hoi. hieu ((ve cham) or (va cham)) loc va hanh cua ((cua triet) OR (su triet))*.