Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
cuong dung » tuong duong, ung dung, thong dung
hoc chieu » hoc thieu, ho chieu, hoc hien
manh tinh » man tinh, manh binh, canh tinh
dung cong » dung trong
cong van » cong vang, cong san, song van
toan cau » toan cao, toan tap, toan tai
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 chieu sach - ((manh tinh) or (hanh trinh)) cuong dung cong van ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((manh tinh) OR (hanh trinh)) cuong dung cong van ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - ((manh tinh) or (hanh trinh)) cuong dung cong van ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((manh tinh) or (hanh trinh)) cuong dung cong van ((toan cau) OR (toan ban))*.