Perhaps you should try some spelling variations:
hanh doi » thanh doi, hanh noi, hang doi
van hanh » van thanh, ban hanh, van anh
su sach » vu sach
doi cua » dai cua, hoi cua
dao tuc » dao duc
dau tuc » dau tu, cau truc, dau nuoc
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
so sach » so sanh, bo sach, co sach
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) OR (so sach)) ty nang xa hoi. lieu va ((dau tuc) or (dao tuc)) van hanh doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty nang xa hoi. lieu va ((dau tuc) OR (dao tuc)) van hanh doi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ty nang xa hoi. lieu va ((dau tuc) or (dao tuc)) van hanh doi cua te*".