Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh trinh » canh tranh, hanh chinh
phan huong » phan thuong, phan xuong, phan hong
luan phan » luan van, luan hoan
anh tang » anh bang, anh dang, anh nang
dan han » dan chan, dan than, dan hanh
han tap » han tai, toan tap, nhan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien nhanh - ((anh tang) or (hanh trinh)) luan phan huong dan han tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - ((anh tang) OR (hanh trinh)) luan phan huong dan han tap.
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - ((anh tang) or (hanh trinh)) luan phan huong dan han tap*.