Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thang cua » thong cua, hang cua, than cua
trung cua » truong cua, trung tuan, trung cap
hoc dieu » hoc thieu, hoc hien
cong van » cong vang, cong san, song van
ban cao » bao cao, ban co, bac cao
ban can » ban dan, ban hang, ban hanh

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 ((thang cua) or (trung cua)) nhung cong van ((ban cao) OR (ban can))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu hanh - hanh ((thang cua) OR (trung cua)) nhung cong van ((ban cao) OR (ban can)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc dieu hanh - hanh ((thang cua) or (trung cua)) nhung cong van ((ban cao) OR (ban can))".
• Adding a wildcard symbol may retrieve word variants: hoc dieu hanh - hanh ((thang cua) or (trung cua)) nhung cong van ((ban cao) OR (ban can))*.