Perhaps you should try some spelling variations:
nuoc san » nuoc luan, nguoi san, nuoc quan
dieu cua » dieu tra
van hanh » van thanh, ban hanh, van anh
phuc van » thuc van, phuc va, chuc van
nang xa » nang x, lang xa, nang ma
san ky » sang ky, van ky, dan ky
ve cau » ke cau, va cau, le cau
de cua » le cua, te cua
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc san ky nang xa hoi. hieu ((ve cau) or (ve cac)) phuc van hanh ((de cua) OR (dieu cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc san ky nang xa hoi. hieu ((ve cau) OR (ve cac)) phuc van hanh ((de cua) OR (dieu cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc san ky nang xa hoi. hieu ((ve cau) or (ve cac)) phuc van hanh ((de cua) OR (dieu cua)) tre*".