Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
luong cong » dung cong, trong cong, cong cong
hoc chinh » hoan chinh, hoc sinh
hanh tran » hanh trang, thanh tran, hanh tram
van luong » van duong, van cuong, nang luong
hoc kinh » hoc sinh, luoc kinh
tran van » luan van
pho tap » pho tam, pho cap, phan tap
pha tap » pham 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 chinh) OR (hoc kinh)) sach - hanh tran van luong cong thanh ((pho tap) or (pha tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chinh) OR (hoc kinh)) sach - hanh tran van luong cong thanh ((pho tap) OR (pha tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chinh) OR (hoc kinh)) sach - hanh tran van luong cong thanh ((pho tap) or (pha tap))*".