Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
ban thanh » ban hanh, ban hang
tung cua » trung cua, tuong cua, dung cua
ban than » van thanh, ban hang, ban hanh

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 tung cua ((hang cong) or (dang cong)) ((ban than) OR (ban thanh)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - thanh tung cua ((hang cong) OR (dang cong)) ((ban than) OR (ban thanh)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - thanh tung cua ((hang cong) or (dang cong)) ((ban than) OR (ban thanh)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - thanh tung cua ((hang cong) or (dang cong)) ((ban than) OR (ban thanh)) cao*.