Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu vien » hieu hien, hieu viec, thieu nien
van hanh » van thanh, ban hanh, van anh
vien cac » vien bach, vien dai, vien da
cac truc » cau truc, cac tru, cac trung
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, dia danh
su sach » so sach, vu sach
va hanh » va thanh, ban hanh, dao hanh
nang ma » tang ma, sang ma, nang cao
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: su sach y nang ma hoi. hieu vien cac truc ((((va hanh) OR (van hanh))) or (va danh)) vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ma hoi. hieu vien cac truc ((((va hanh) OR (van hanh))) OR (va danh)) vai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ma hoi. hieu vien cac truc ((((va hanh) OR (van hanh))) or (va danh)) vai cua triet*".