Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
vien cac » vien bach, vien dai, vien da
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
vu lanh » vu anh, vu manh, tu lanh
nang ma » tang ma, sang ma, nang cao
lang xa » lang ha, dang xay, lang van
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua
ve cac » va cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu lanh dao ((lang xa) or (nang ma)) hoi. hieu ((ve cac) OR (vien cac)) luc va danh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu lanh dao ((lang xa) OR (nang ma)) hoi. hieu ((ve cac) OR (vien cac)) luc va danh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu lanh dao ((lang xa) or (nang ma)) hoi. hieu ((ve cac) OR (vien cac)) luc va danh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: vu lanh dao ((lang xa) or (nang ma)) hoi. hieu ((ve cac) OR (vien cac)) luc va danh vi cua triet*.