Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
tu cach » tu cac
cac luc » cau luc, coc luc, cac cuoc
hieu va » lieu va, hieu qua
ca phoi » cap phoi, cay phoi, gap phoi
dang ca » dang cac, dan ca, hang ca
ky dang » ky nang, ky danh
su sach » so sach, vu sach
vi cua » vai cua, di cua
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: ((tu cach) or (su sach)) ky dang ca phoi. hieu va ((cac luc) or (cac nuoc)) van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky dang ca phoi. hieu va ((cac luc) OR (cac nuoc)) van hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ky dang ca phoi. hieu va ((cac luc) or (cac nuoc)) van hanh vi cua te*.