Perhaps you should try some spelling variations:
nhieu tang » chieu sang, hieu lang, nhiet nang
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hoc nhieu » hoc thieu, hoc nhiet, hop nhieu
trung dap » trung cap, trung dam, trung lap
trung dai » truong dai, truong dao, trung tam
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc nhieu tang - hanh ((trung dap) OR (trung dai)) ((nhung cong) or (thong cong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nhieu tang - hanh ((trung dap) OR (trung dai)) ((nhung cong) OR (thong cong)) dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc nhieu tang - hanh ((trung dap) OR (trung dai)) ((nhung cong) or (thong cong)) dan than cau".
• Adding a wildcard symbol may retrieve word variants: hoc nhieu tang - hanh ((trung dap) OR (trung dai)) ((nhung cong) or (thong cong)) dan than cau*.