Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
qua cac » cua cac
cac duc » cac du, cao duc, cac dac
duc van » duc va, duc tan, duc manh
su cac » tu cac, su cao, su can
vi cua » vai cua
di cua » doi cua, de cua, do 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 cac ky nang xa hoi. hieu qua cac duc van hanh ((vi cua) or (((di cua) OR (dai cua)))) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac ky nang xa hoi. hieu qua cac duc van hanh ((vi cua) OR (((di cua) OR (dai cua)))) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ky nang xa hoi. hieu qua cac duc van hanh ((vi cua) or (((di cua) OR (dai cua)))) triet*".