Perhaps you should try some spelling variations:
trinh thuat » trinh luat, trinh thiet, trinh thuc
thuat nhung » thuat hung, thuat chung, thuat chuong
hanh trinh » canh tranh, hanh chinh
cong luan » tong luan, cong tuan, dong luan
chinh can » chinh ca, chinh ban, chinh cau
hoc dieu » hoc thieu, hoc hien
cong lan » cong lang, cong san, cong tan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dieu hanh - hanh trinh thuat nhung ((cong lan) OR (cong luan)) chinh can~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc dieu hanh - hanh trinh thuat nhung ((cong lan) OR (cong luan)) chinh can".
• Adding a wildcard symbol may retrieve word variants: hoc dieu hanh - hanh trinh thuat nhung ((cong lan) OR (cong luan)) chinh can*.