Perhaps you should try some spelling variations:
hanh via » hanh vi, hanh va, anh va
su sach » vu sach
via cua » gia cua, gian cua, giau cua
va hanh » van hanh, va thanh, va danh
dau tuc » dau tu, dao tuc, dau nuoc
cua tre » cua te, cuu tre, cua triet
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
so sach » so sanh, bo sach, co sach

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)) ky dang xa hoi. lieu va ((dau tuc) or (cau truc)) va hanh via cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky dang xa hoi. lieu va ((dau tuc) OR (cau truc)) va hanh via cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky dang xa hoi. lieu va ((dau tuc) or (cau truc)) va hanh via cua tre*.