Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
trinh vap » trinh van, trinh vat, trinh va
vap nhung » va nhung, ve nhung, voi nhung
manh toan » thanh toan, anh tuan, tinh toan
dien dan » vien dai, gian dan, dien va
dan chan » dan gian, dan ca, van chat
hien » bien, vien, hieu

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) OR (hien dai)) - hanh trinh vap nhung cong ((manh toan) or (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((dien dan) OR (hien dai)) - hanh trinh vap nhung cong ((manh toan) OR (dan chan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((dien dan) OR (hien dai)) - hanh trinh vap nhung cong ((manh toan) or (dan chan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((dien dan) OR (hien dai)) - hanh trinh vap nhung cong ((manh toan) or (dan chan)) cau*.