Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
tinh nam » tinh lao, tinh va
sach ty » sach y, sach tu, sach thu
va tinh » may tinh
vu sach » vu bach, su sach, vu khach
ty nang » ky nang, ty xang, ty hang
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty nang o hoi. hieu ((ve cam) or (va cam)) xuc va tinh nam ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang o hoi. hieu ((ve cam) OR (va cam)) xuc va tinh nam ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang o hoi. hieu ((ve cam) or (va cam)) xuc va tinh nam ((cua triet) OR (cua viet))".
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang o hoi. hieu ((ve cam) or (va cam)) xuc va tinh nam ((cua triet) OR (cua viet))*.