Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
viet dung » viet hung, viet huong, viet trung
vat dung » van dung, mat duong, xay dung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
va dung » van dung, va duong, va ung

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 trung ((va dung) or (((vat dung) OR (viet dung)))) cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - thanh trung ((va dung) OR (((vat dung) OR (viet dung)))) cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - thanh trung ((va dung) or (((vat dung) OR (viet dung)))) cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - thanh trung ((va dung) or (((vat dung) OR (viet dung)))) cong dan toan cao*.