Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tinh dai » trinh dai, tinh da, tinh hai
mai hoi » mai khoi, dai hoi, lai hoi
va tinh » may tinh
te cac » tu cac, ve cac, te cao
me hoi » le hoi
dam tu » cam tu, tam tu, dam thuc
nam tu » nam thu, nam thuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cac ky nang ((me hoi) or (mai hoi)). hieu qua ((dam tu) OR (nam tu)) va tinh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky nang ((me hoi) OR (mai hoi)). hieu qua ((dam tu) OR (nam tu)) va tinh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ky nang ((me hoi) or (mai hoi)). hieu qua ((dam tu) OR (nam tu)) va tinh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: te cac ky nang ((me hoi) or (mai hoi)). hieu qua ((dam tu) OR (nam tu)) va tinh dai cua triet*.