Perhaps you should try some spelling variations:
va triet » va trien, ve triet, cua triet
thuy san » thuat san, thuy anh
thu san » thu ban, phu san, thuat san
hieu ve » hieu va, hieu van
va tinh » may tinh
tinh su » trinh su, hinh su, tinh tu
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
thiet » thieu

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) or (thuy san)) ky nang x ho. hieu ve cam xuc va tinh su ((va triet) OR (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu san) OR (thuy san)) ky nang x ho. hieu ve cam xuc va tinh su ((va triet) OR (va thiet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu san) or (thuy san)) ky nang x ho. hieu ve cam xuc va tinh su ((va triet) OR (va thiet))".
• Adding a wildcard symbol may retrieve word variants: ((thu san) or (thuy san)) ky nang x ho. hieu ve cam xuc va tinh su ((va triet) OR (va thiet))*.