Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nang ro » nang co, nang ho, nang ra
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sach ty » sach y, sach tu, sach thu
hanh di » hanh vi, hanh de, hang di
su sach » so sach, vu sach
ro hai » co hai, o hai, so hai
xac va » tac va, ac va, bac va
luc va » tuc va, loc va
di cua » dai cua, doi cua, de cua

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 ro hai. hieu ve cham ((((xac va) or (luc va))) or (duc va)) hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ro hai. hieu ve cham ((((xac va) OR (luc va))) OR (duc va)) hanh di cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ro hai. hieu ve cham ((((xac va) or (luc va))) or (duc va)) hanh di cua triet*.