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
hoc dien » hoc hien, hoc vien, hoc lien
hoc dieu » hoc thieu, hoc hien

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