Perhaps you should try some spelling variations:
hien hanh » dieu hanh
truong va » truong dai, truong cao, truong dao
hang nong » thang long, han tong
trung va » trang va, trung ha, trung tam
nong dan » cong dan, nong san, nguong dan
chan tap » han tap, chan ta, toan tap
phan tap » phan lap, han tap, pha tap

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