Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cam truc » cau truc, nam truc, lam truoc
vu khach » vu khanh, vu khac, vay khach
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua
va cam » va cham, va cac, va cao

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) or (vu khach)) y nang xa hoi. hieu va cam truc ((va danh) OR (va hanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu khach)) y nang xa hoi. hieu va cam truc ((va danh) OR (va hanh)) vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu khach)) y nang xa hoi. hieu va cam truc ((va danh) OR (va hanh)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu khach)) y nang xa hoi. hieu va cam truc ((va danh) OR (va hanh)) vi cua triet*.