Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
danh doi » danh di, thanh doi, dung doi
va sach » van sach, va cach, a sach
cac dac » cac dan, cac dai, cac bac
va danh » va dinh, va dan, va hanh
doi cua » dai cua, hoi cua
va sac » va cac, va suc, va san
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((va sac) or (va sach)) ky nang x hoi. hieu vien ((cac du) or (cac dac)) va danh doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((va sac) OR (va sach)) ky nang x hoi. hieu vien ((cac du) OR (cac dac)) va danh doi cua te.
• Adding a wildcard symbol may retrieve word variants: ((va sac) or (va sach)) ky nang x hoi. hieu vien ((cac du) or (cac dac)) va danh doi cua te*.