Perhaps you should try some spelling variations:
nganh nong » nganh cong
ngan long » nganh cong, ngan hang, ngoc long
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
luc van » luoc van, luu van, duc van
cau luc » cau truc, cau phuc
hieu ve » hieu va, hieu van
ha hoi » hoa hoi, ha noi, xa hoi
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ngan long) OR (nganh nong)) ha hoi. ((hieu ve) or (hieu qua)) cau luc van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ngan long) OR (nganh nong)) ha hoi. ((hieu ve) OR (hieu qua)) cau luc van hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ngan long) OR (nganh nong)) ha hoi. ((hieu ve) or (hieu qua)) cau luc van hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ngan long) OR (nganh nong)) ha hoi. ((hieu ve) or (hieu qua)) cau luc van hanh vi cua te*.