Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh sua » hanh va, hanh tu, ban sua
thuc va » thuc vat, thuc dan, thuc day
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
tuc va » truc va, tuc xa, duc va
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam

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 y nang xa hoi. hieu ve cam ((tuc va) or (thuc va)) ((hanh sua) OR (hinh su)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu ve cam ((tuc va) OR (thuc va)) ((hanh sua) OR (hinh su)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. hieu ve cam ((tuc va) or (thuc va)) ((hanh sua) OR (hinh su)) cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu ve cam ((tuc va) or (thuc va)) ((hanh sua) OR (hinh su)) cua triet*.