Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
cau tren » cu tren, dau tren, cau treo
thu san » thuy san, thu ban, phu san
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
ca tren » cu tren, la tren, co tren
san ky » sang ky, van ky, dan ky
cac bo » bac bo, cac co

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu san ky nang xa hoi. lieu va ((cac hop) or (cac bo)) va hanh hai ((cau tren) OR (ca tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu san ky nang xa hoi. lieu va ((cac hop) OR (cac bo)) va hanh hai ((cau tren) OR (ca tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu san ky nang xa hoi. lieu va ((cac hop) or (cac bo)) va hanh hai ((cau tren) OR (ca tren))".
• Adding a wildcard symbol may retrieve word variants: thu san ky nang xa hoi. lieu va ((cac hop) or (cac bo)) va hanh hai ((cau tren) OR (ca tren))*.