Perhaps you should try some spelling variations:
nuoc giai » nuoc ngoai, quoc gia, nuoc thai
truc van » truc va, thuc van, truc ban
van hanh » van thanh, ban hanh, van anh
cau tren » cu tren, dau tren, ca tren
giai ky » giai ke, giang ky
nang xa » nang x, lang xa, nang ma
hanh de » hanh ve, hanh kem
cuu tre » cua tre, cau treo
ve cau » va cau, ve cac, le cau
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 tre) OR (cau tren))~.
• 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 tre) OR (cau tren))*.
• 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 tre) OR (cau tren))*".