Perhaps you should try some spelling variations:
thien cac » thien cau, thieu cac, trien cac
cua triet » cua viet, su triet, va triet
hien cac » vien cac, hieu cac, dien cac
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
tuc va » thuc va, truc va, tuc xa
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: vu sach ky nang xa hoi. hieu ((hien cac) OR (thien cac)) tuc va hanh vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang xa hoi. hieu ((hien cac) OR (thien cac)) tuc va hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang xa hoi. hieu ((hien cac) OR (thien cac)) tuc va hanh vi cua triet*.