Perhaps you should try some spelling variations:
trung quan » truong quan, trong quan, trung tuan
dong thong » thong thong, nong thon, dong thanh
trung qua » trong qua, trung cua, truong quan
thong tac » thong cac, tuong tac, thong tai
hoc vien » hoc viet, hoc tieng, hoc vi
tac ran » tac can, tac van, tac quan
ran cau » van cau, ban cau, can cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc vien) or (hoc hien)) tinh - manh ((trung qua) OR (trung quan)) dong thong tac ran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc vien) OR (hoc hien)) tinh - manh ((trung qua) OR (trung quan)) dong thong tac ran cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc vien) or (hoc hien)) tinh - manh ((trung qua) OR (trung quan)) dong thong tac ran cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc vien) or (hoc hien)) tinh - manh ((trung qua) OR (trung quan)) dong thong tac ran cau*.