Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thong cong » tong cong, thong thong, phong chong
thanh chau » thanh cha, thanh cham, thanh chu
hoc thieu » toc thieu, hoc hien
trinh vat » trinh van, trinh luat, sinh vat
tan thanh » tran thanh, tang thanh, toan thanh
ho chieu » theo chieu, doi chieu, mot chieu

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 (hoc thieu)) sach - hanh trinh vat ((thong cong) OR (trong cong)) tan thanh chau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) sach - hanh trinh vat ((thong cong) OR (trong cong)) tan thanh chau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) sach - hanh trinh vat ((thong cong) OR (trong cong)) tan thanh chau*.