Perhaps you should try some spelling variations:
nuoc giai » nuoc ngoai, quoc gia, nuoc thai
hieu van » hieu va, thien van, lieu va
truc van » truc va, thuc van, truc ban
van hanh » van thanh, ban hanh, van anh
dau tren » dau tien, dat tren, dau tieng
giai ky » giai ke, giang ky
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
hanh de » hanh ve, hanh kem
de dau » dem dau, de dao, de dat

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) OR (hieu van)) cau truc van hanh de dau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc giai ky nang xa hoi. ((hieu ve) OR (hieu van)) cau truc van hanh de dau tren".
• Adding a wildcard symbol may retrieve word variants: nuoc giai ky nang xa hoi. ((hieu ve) OR (hieu van)) cau truc van hanh de dau tren*.