Perhaps you should try some spelling variations:
trinh van » trinh han, trinh quan, trinh toan
cua triet » cua viet, su triet, va triet
cham duc » pham duc, cham soc, pham duy
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
tinh va » tich va, trinh vat, tinh gia
tu sai » tu bai, tu cai, tu lai
tu san » thu san, tu ban, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sai) or (tu san)) ky nang x ho. hieu ve cham duc va ((tinh va) OR (trinh van)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sai) OR (tu san)) ky nang x ho. hieu ve cham duc va ((tinh va) OR (trinh van)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sai) or (tu san)) ky nang x ho. hieu ve cham duc va ((tinh va) OR (trinh van)) cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sai) or (tu san)) ky nang x ho. hieu ve cham duc va ((tinh va) OR (trinh van)) cua triet*.