Perhaps you should try some spelling variations:
thong tranh » thong thanh, thong tran, thong trach
nhieu tang » chieu sang, nhiet nang
tranh toan » thanh toan, trinh toan, tinh toan
hieu lang » chieu sang, hieu quang, hieu van
tranh cua » manh cua
doanh cua » doanh luan
toan tap » toan ban

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) or (hieu lang)) - hanh ((tranh cua) OR (doanh cua)) thong thong tranh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((nhieu tang) OR (hieu lang)) - hanh ((tranh cua) OR (doanh cua)) thong thong tranh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((nhieu tang) or (hieu lang)) - hanh ((tranh cua) OR (doanh cua)) thong thong tranh toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((nhieu tang) or (hieu lang)) - hanh ((tranh cua) OR (doanh cua)) thong thong tranh toan tap*.