Perhaps you should try some spelling variations:
hcong trong » huong trong, thuong trong, phuong trong
cong trong » cong thuong, duong trong, cong trinh
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
vat dung » van dung, va dung, viet dung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chi) or (hoc thieu)) xanh - ((hcong trong) or (cong trong)) vat dung cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chi) OR (hoc thieu)) xanh - ((hcong trong) OR (cong trong)) vat dung cong dan toan ban.
• Adding a wildcard symbol may retrieve word variants: ((doi chi) or (hoc thieu)) xanh - ((hcong trong) or (cong trong)) vat dung cong dan toan ban*.