Perhaps you should try some spelling variations:
thieu sach » thien hach, hieu cach, theo sach
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
luat quang » luat quan, xuat quang, chat quang
quang cong » quang cuong, quang dong, quang hoang
cong tan » cong tac, cong san, cong thanh
tan hoc » toan hoc, than hoc, van hoc
hoc dai » hoc dan

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) or (chieu sach)) - hanh trinh luat quang cong tan hoc dai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (chieu sach)) - hanh trinh luat quang cong tan hoc dai.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (chieu sach)) - hanh trinh luat quang cong tan hoc dai*.