Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
truong cao » truong dai
nhung cong » dung cong, thong cong, nhung don
hoc thieu » toc thieu, hoc hien
truong va » truong dai, truong dao, luong va
hang cong » dang cong, hang nong, bang cong
san than » sang than, san thanh, ban than
than tap » toan tap, han tap, phan 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 thieu tinh - thanh ((truong va) or (truong cao)) ((nhung cong) OR (hang cong)) san than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - thanh ((truong va) OR (truong cao)) ((nhung cong) OR (hang cong)) san than tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - thanh ((truong va) or (truong cao)) ((nhung cong) OR (hang cong)) san than tap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - thanh ((truong va) or (truong cao)) ((nhung cong) OR (hang cong)) san than tap*.