Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
qua cham » qua hai, qua cac, va cham
va thanh » gia thanh, ban thanh, va tinh
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va hanh » va danh, ban hanh, dao hanh
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: su sach ky nang xa hoi. hieu qua cham soc ((((va hanh) OR (va thanh))) or (van hanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu qua cham soc ((((va hanh) OR (va thanh))) OR (van hanh)) vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu qua cham soc ((((va hanh) OR (va thanh))) or (van hanh)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu qua cham soc ((((va hanh) OR (va thanh))) or (van hanh)) vi cua triet*.