Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
doc sach » hoc sach, toc sach, nuoc sach
tinh vi » trinh vi, tinh voi, tinh va
va tinh » may tinh
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
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) or (doc sach)) ky nang xa hoi. hieu ((ve cam) OR (ve cac)) xuc va tinh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (doc sach)) ky nang xa hoi. hieu ((ve cam) OR (ve cac)) xuc va tinh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (doc sach)) ky nang xa hoi. hieu ((ve cam) OR (ve cac)) xuc va tinh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (doc sach)) ky nang xa hoi. hieu ((ve cam) OR (ve cac)) xuc va tinh vi cua triet*.