Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
hien sach » dien sach, kien sach, chieu sach
quan dung » quang dung, quan duong, qua dung
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
toan ban » van ban

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) or (thien hach)) - hanh trinh quan dung cong dan ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sach) OR (thien hach)) - hanh trinh quan dung cong dan ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien sach) or (thien hach)) - hanh trinh quan dung cong dan ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sach) or (thien hach)) - hanh trinh quan dung cong dan ((toan tap) OR (toan ban))*.