Perhaps you should try some spelling variations:
dong thong » thong thong, nong thon, dong thanh
doi chieu » doc hieu, ho chieu, mot chieu
nang hang » nang sang, hang hang, cang thang
thong dan » thong van, tuong dan, thong den
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
doi chi » doi khi
hang xa » hoang xa, hang va, hang ca
xa dong » ha dong, van dong, lao dong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) OR (doi chi)) tinh - nang hang xa dong thong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doi chi)) tinh - nang hang xa dong thong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doi chi)) tinh - nang hang xa dong thong dan toan cau*.