Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hien cac » thien cac, vien cac, hieu cac
hanh lai » hanh lam, hanh tai, thanh lap
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
te sach » toc sach
cac su » cach su, cac sau, cac du
cua tu » cua tuc, cua su, cua cu
su va » su van, tu va

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) or (te sach)) ky nang xa hoi. hieu hien cac su va hanh lai ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) ky nang xa hoi. hieu hien cac su va hanh lai ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (te sach)) ky nang xa hoi. hieu hien cac su va hanh lai ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (te sach)) ky nang xa hoi. hieu hien cac su va hanh lai ((cua te) OR (cua tu))*.