Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
theo tiem » theo tieu, them niem, thep tieu
tiem hanh » tien hanh, tim hanh, tien thanh
hanh mang » nhanh mang, hanh trang, nhanh lang
hang cong » dang cong, hang nong, bang cong
mang cua » manh cua, dung cua, ban cua
vang tan » van tan, vang tao, vang van
tang tan » tang van, tang tai, tang dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tiem hanh - hanh mang cua ((nhung cong) or (hang cong)) ((vang tan) OR (tang tan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tiem hanh - hanh mang cua ((nhung cong) OR (hang cong)) ((vang tan) OR (tang tan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tiem hanh - hanh mang cua ((nhung cong) or (hang cong)) ((vang tan) OR (tang tan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo tiem hanh - hanh mang cua ((nhung cong) or (hang cong)) ((vang tan) OR (tang tan)) cau*.