Perhaps you should try some spelling variations:
nhanh nang » nhanh lang, nhanh mang, nhanh quang
thanh phan » thanh pho, thanh san, thanh toan
hoc thieu » toc thieu, hoc hien
dong cong » duong cong, dung cong, dang cong
thanh hai » thanh hoa, thanh san
ho chieu » theo chieu, doi chieu, mot chieu
cao dong » cao dang, lao dong, cao cong
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) tinh - nhanh nang cao dong cong dan ((thanh hai) OR (thanh phan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) tinh - nhanh nang cao dong cong dan ((thanh hai) OR (thanh phan)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) tinh - nhanh nang cao dong cong dan ((thanh hai) OR (thanh phan))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) tinh - nhanh nang cao dong cong dan ((thanh hai) OR (thanh phan))*.