Perhaps you should try some spelling variations:
thuat thuc » thuat thuy, thuyet thuc, thuc thuc
cong cong » cong dong, trong cong, dang cong
dung cong » dung trong
thap khu » thap phu, nhap khau, thuat khu
ban ve » ban va
y thu » ly thu, ky thu, y thuc
ve y » ve ky, ve _, ke y
tuyen » truyen, quyen

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

• Performing a fuzzy search may retrieve terms with similar spellings: tuyen tap ((thap khu) or (thuat thuc)) đe co ban ve y thu ((cong cong) OR (dung cong))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tuyen tap ((thap khu) OR (thuat thuc)) đe co ban ve y thu ((cong cong) OR (dung cong)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tuyen tap ((thap khu) or (thuat thuc)) đe co ban ve y thu ((cong cong) OR (dung cong))".
• Adding a wildcard symbol may retrieve word variants: tuyen tap ((thap khu) or (thuat thuc)) đe co ban ve y thu ((cong cong) OR (dung cong))*.