Perhaps you should try some spelling variations:
thuong luong » theo luong, cong luong, thong thuong
hanh trinh » canh tranh, hanh chinh
cua thuong » cua truong, cua phuong, ca thuong
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
tai toan » bai toan, tai tuan, tam toan
tap toan » tap doan, tap quan, bai toan

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 (hoc thieu)) sach - hanh trinh cua thuong luong ((tai toan) or (tap toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc thieu)) sach - hanh trinh cua thuong luong ((tai toan) OR (tap toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (hoc thieu)) sach - hanh trinh cua thuong luong ((tai toan) or (tap toan)) cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (hoc thieu)) sach - hanh trinh cua thuong luong ((tai toan) or (tap toan)) cao*.