Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cac nuoc » hoc nuoc, cua nuoc
so sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
nang xa » nang x, lang xa, nang ma
dan di » danh di, dan da, dan de
di cua » dai cua, doi cua, de cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh ky nang xa hoi. hieu van ((((cac nuoc) OR (cap nuoc))) or (dat nuoc)) cac dan di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky nang xa hoi. hieu van ((((cac nuoc) OR (cap nuoc))) OR (dat nuoc)) cac dan di cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh ky nang xa hoi. hieu van ((((cac nuoc) OR (cap nuoc))) or (dat nuoc)) cac dan di cua te*".