Perhaps you should try some spelling variations:
cong thuong » hang thuong
thanh dung » thanh duong, thanh tung, thanh hung
thuong dan » huong dan, thuong han, thuong dam
hoc thieu » hoc hien
dung phap » dung phan, dung phat, dung php
phap cong » phan cong, pham cong, phap phong
phan cac » phan dau, phan lap, phan van

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) or (toc thieu)) xanh - thanh dung phap cong thuong dan ((phan cac) or (nhan cach))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) xanh - thanh dung phap cong thuong dan ((phan cac) OR (nhan cach)).
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) xanh - thanh dung phap cong thuong dan ((phan cac) or (nhan cach))*.