Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh trinh » canh tranh
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, huong dan
toan cao » toan ban, toan tap

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

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