Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, minh trang
hanh trinh » canh tranh, hanh chinh
hien sach » dien sach, kien sach, thien hach
nang cong » nang song, dang cong, bang cong
cong dan » cong san, cong tan, huong dan
toan cao » toan ban
toan tap » toan ban
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - ((hanh trang) or (hanh trinh)) va nang cong dan ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - ((hanh trang) OR (hanh trinh)) va nang cong dan ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - ((hanh trang) or (hanh trinh)) va nang cong dan ((toan cao) or (toan tap))*.