Perhaps you should try some spelling variations:
hanh doi » thanh doi, hanh noi, hang doi
su sach » so sach, vu sach
doi cua » dai cua, hoi cua
va hanh » van hanh, va thanh, va danh
van bao » van ban, van dao
van bac » van ban, van hac, dan bac
so sanh » do sanh
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
v nang » va nang, vu nang, van nang
tuc va » thuc va, truc va, tuc xa

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 (so sanh)) v nang xa hoi. thien ((van bac) OR (van bao)) tuc va hanh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) v nang xa hoi. thien ((van bac) OR (van bao)) tuc va hanh doi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) v nang xa hoi. thien ((van bac) OR (van bao)) tuc va hanh doi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) v nang xa hoi. thien ((van bac) OR (van bao)) tuc va hanh doi cua tre*.