Perhaps you should try some spelling variations:
bieu hien » dieu hien, dieu khien, bien phien
dieu kien » dieu khien, dien bien
van hanh » van thanh, ban hanh, van anh
va hanh » va thanh, va danh, ban hanh
vai cua » dai cua, hai cua, lai cua
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
sach ky » sac ky, sach y, sach ty
cac lo » cac lop, cac co, cac bo
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang xa hoi. ((bieu hien) or (dieu kien)) cac lo ((va hanh) OR (van hanh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang xa hoi. ((bieu hien) OR (dieu kien)) cac lo ((va hanh) OR (van hanh)) vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang xa hoi. ((bieu hien) or (dieu kien)) cac lo ((va hanh) OR (van hanh)) vai cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang xa hoi. ((bieu hien) or (dieu kien)) cac lo ((va hanh) OR (van hanh)) vai cua te*.