Perhaps you should try some spelling variations:
nuoc giai » nuoc ngoai, quoc gia, nuoc thai
van hanh » van thanh, ban hanh, van anh
truc van » truc va, thuc van, truc ban
giai ky » giai ke, giang ky
nang xa » nang x, lang xa, nang ma
ve cau » va cau, ve cac, le cau
de cua » le cua, te cua, dieu cua
ke cau » ket cau

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

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