Perhaps you should try some spelling variations:
tan trinh » tan thinh, tao trinh, dan trinh
va trong » va truong, va tuong, va trung
va thong » va thuong, va phuong, he thong
trinh tu » trinh ky, trinh do
tap nuoc » cap nuoc, phap nuoc, ngap nuoc
hai tan » hai van, hai quan
nuoc ta » nuoc tai, nuoc va, nuoc thai
va tap » va tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: cong ty tnhh đau ((va trong) OR (va thong)) hai tan trinh tu va tap nuoc ta~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cong ty tnhh đau ((va trong) OR (va thong)) hai tan trinh tu va tap nuoc ta".
• Adding a wildcard symbol may retrieve word variants: cong ty tnhh đau ((va trong) OR (va thong)) hai tan trinh tu va tap nuoc ta*.