Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh hai » thanh hai, nhanh hai, hang hai
hai cua » thai cua, dai cua, hoi cua
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
su sach » so sach
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, vu khach
y nang » ky nang, ly nang, v nang
va cam » va cham, va cao, va cai

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