Perhaps you should try some spelling variations:
chat phuc » thuat phuc, khac phuc, chat huu
hieu van » hieu va, thien van, lieu va
van chat » cao chat
phuc cam » phan cam, phuc co, phuc cua
dan thi » dang thi, dinh thi, dan thuc
su sach » vu sach
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
so sach » so sanh, bo sach, co sach
cua tre » cua te, cuu tre, cua triet

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 sach)) ty nang xa hoi. hieu van chat phuc cam ((dan thi) or (tran thi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty nang xa hoi. hieu van chat phuc cam ((dan thi) OR (tran thi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ty nang xa hoi. hieu van chat phuc cam ((dan thi) or (tran thi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ty nang xa hoi. hieu van chat phuc cam ((dan thi) or (tran thi)) cua tre*.