Perhaps you should try some spelling variations:
thong thanh » phong thanh, thong than, trong thanh
hanh thang » nhanh thang, thanh thang, hanh trang
dong thong » thong thong, nong thon, dong thanh
thang lao » tang lao, thanh lap, thang loi
cot lieu » co lieu, vat lieu, so lieu
lao dong » ha dong, van dong
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
ho lieu » so lieu, co lieu, ho kieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho lieu) or (cot lieu)) tinh - hanh thang lao dong thong thanh ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho lieu) OR (cot lieu)) tinh - hanh thang lao dong thong thanh ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho lieu) or (cot lieu)) tinh - hanh thang lao dong thong thanh ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ((ho lieu) or (cot lieu)) tinh - hanh thang lao dong thong thanh ((toan cau) OR (toan ban))*.