Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
van hanh » van thanh, ban hanh, van anh
hanh tai » thanh tai, hang tai, han tai
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cac lop » cac hop, cac loai
tai cua » thai cua, tai cuc, tri cua
cac lo » cac co, cac bo, cac ho
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 sach ky nang xa hoi. hieu hien ((cac lo) or (cac lop)) van hanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu hien ((cac lo) OR (cac lop)) van hanh tai cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu hien ((cac lo) or (cac lop)) van hanh tai cua te*.