Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » thong cong, hang cong, nhung don
trang cua » tranh cua, tang cua, trung cua
dung cong » dung trong
ho chieu » hoc thieu, doi chieu, mot chieu
gian nan » gian dan, gian lan, gian van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (theo chieu)) sach - hanh trang cua ((nhung cong) or (dung cong)) dan gian nan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - hanh trang cua ((nhung cong) OR (dung cong)) dan gian nan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - hanh trang cua ((nhung cong) or (dung cong)) dan gian nan".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) sach - hanh trang cua ((nhung cong) or (dung cong)) dan gian nan*.