Perhaps you should try some spelling variations:
bieu hien » dieu hien, dieu khien, bien phien
hieu hien » dieu hien, chieu chien, dieu khien
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
tai cua » thai cua, tai cuc, tri cua
su sac » su sach, su cac, su xac
cac ly » cac ky, cac le, cam ly
sac ky » cac ky, sai ky
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: su sac ky lang xa hoi. ((hieu hien) or (bieu hien)) ((cac ly) or (mac le)) van hanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky lang xa hoi. ((hieu hien) OR (bieu hien)) ((cac ly) OR (mac le)) van hanh tai cua te.
• Adding a wildcard symbol may retrieve word variants: su sac ky lang xa hoi. ((hieu hien) or (bieu hien)) ((cac ly) or (mac le)) van hanh tai cua te*.