Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tinh da » tinh va, tinh gia, tinh lao
va tinh » may tinh
cac luc » cau luc, coc luc, cac nuoc
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
dai hai » dai han, dai hoi, dai tai
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang ((mai hoi) or (dai hai)). hieu ve cac luc va tinh da ((cua te) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ((mai hoi) OR (dai hai)). hieu ve cac luc va tinh da ((cua te) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ((mai hoi) or (dai hai)). hieu ve cac luc va tinh da ((cua te) or (cua triet))*.