Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
doi chieu » doi chi, mot chieu, thi chieu
dang cong » dung cong
cong luan » tong luan, cong tuan, dong luan
luan phan » luan van, luan hoan
ho chieu » theo chieu, hoc thieu, mot chieu
doc hieu » toc thieu, hoc thieu, hoc hien
trinh va » trinh van, trinh vat, trinh ve
phan lap » phan dau
va dang » van dang, va nang, va lang

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 (((doi chieu) OR (doc hieu)))) sach - hanh trinh va dang cong luan phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (((doi chieu) OR (doc hieu)))) sach - hanh trinh va dang cong luan phan lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (((doi chieu) OR (doc hieu)))) sach - hanh trinh va dang cong luan phan lap".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (((doi chieu) OR (doc hieu)))) sach - hanh trinh va dang cong luan phan lap*.