Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh trinh » canh tranh, hanh chinh
luan phan » luan van
luan hoan » luan van
anh tang » anh bang, anh dang, anh nang
dan chan » dan gian, dan ca, van chat
chan tap » han tap, phan tap, chan ta

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) OR (luan hoan)) huong dan chan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - ((anh tang) OR (hanh trinh)) ((luan phan) OR (luan hoan)) huong dan chan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - ((anh tang) or (hanh trinh)) ((luan phan) OR (luan hoan)) huong dan chan tap".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - ((anh tang) or (hanh trinh)) ((luan phan) OR (luan hoan)) huong dan chan tap*.