Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
dong trong » duong trong, dung trong, cong trong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
trong dan » trong dang, trong san, trong tan
ho chieu » theo chieu, hoc thieu, doi chieu
cua dong » chua dong, cua cong, cua dang
than cau » phan cau, than cap, thanh chau
toan cau » 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 thiet) or (ho chieu)) tach - hanh trinh cua dong trong dan ((than cau) OR (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (ho chieu)) tach - hanh trinh cua dong trong dan ((than cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thiet) or (ho chieu)) tach - hanh trinh cua dong trong dan ((than cau) OR (toan cau))".
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (ho chieu)) tach - hanh trinh cua dong trong dan ((than cau) OR (toan cau))*.