Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, thong thong, phong chong
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
tong cong » trong cong, cong cong, dung cong
theo chu » theo chieu, cho chu, chao chu
dan toan » van toan, dan than, manh toan
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: ((hoc chieu) OR (theo chu)) sach - hanh trinh cua ((thong cong) OR (tong cong)) dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (theo chu)) sach - hanh trinh cua ((thong cong) OR (tong cong)) dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (theo chu)) sach - hanh trinh cua ((thong cong) OR (tong cong)) dan toan cao*.