Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » canh tranh, hanh chinh
trinh vap » trinh van, trinh vat, trinh va
vap nhung » va nhung, ve nhung, voi nhung
hoc dien » hoc hien, hoc vien, hoc dieu
dien dan » hien dai, vien dai, gian dan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dien dan - hanh trinh vap nhung cong ((tinh toan) or (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dien dan - hanh trinh vap nhung cong ((tinh toan) OR (dan chan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc dien dan - hanh trinh vap nhung cong ((tinh toan) or (dan chan)) cau*.