Perhaps you should try some spelling variations:
trinh van » trinh han, trinh quan, trinh toan
va triet » va thiet, va trien, ve triet
xa trinh » xa tinh, va trinh, xuan trinh
coc tuc » coc luc, hoc thuc, doc thuc
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
hieu ve » hieu van
hieu va » lieu va, hieu qua
van va » van vat, van van, ban va
vu sac » vu sach, vu san, va sac

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ((ky lang) OR (ky tang)) xa hoi. ((hieu ve) or (hieu va)) coc tuc xa trinh van va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ((ky lang) OR (ky tang)) xa hoi. ((hieu ve) OR (hieu va)) coc tuc xa trinh van va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ((ky lang) OR (ky tang)) xa hoi. ((hieu ve) or (hieu va)) coc tuc xa trinh van va triet".
• Adding a wildcard symbol may retrieve word variants: vu sac ((ky lang) OR (ky tang)) xa hoi. ((hieu ve) or (hieu va)) coc tuc xa trinh van va triet*.