Perhaps you should try some spelling variations:
nhanh mang » nhanh lang, nhanh quang, nhanh thang
nhung cong » dung cong, thong cong, hang cong
thi chieu » thi chien, thi hieu, theo chieu
hanh mang » hanh trang, nhanh lang, thanh hang
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » 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: ((thi chieu) or (ho chieu)) sach - ((nhanh mang) OR (hanh mang)) va nhung cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi chieu) OR (ho chieu)) sach - ((nhanh mang) OR (hanh mang)) va nhung cong dan toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thi chieu) or (ho chieu)) sach - ((nhanh mang) OR (hanh mang)) va nhung cong dan toan cau*".