Perhaps you should try some spelling variations:
tran thanh » ban thanh, van thanh, quan thanh
tan thanh » tang thanh, toan thanh, ban thanh
chat duc » chat xuc, chat doc, chet duoc
su sach » so sach
va chat » van chat, va phat, cao chat
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, vu khach
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di 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) or (vu sach)) ky nang xa hoi. hieu va chat duc ((tan thanh) OR (tran thanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky nang xa hoi. hieu va chat duc ((tan thanh) OR (tran thanh)) vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ky nang xa hoi. hieu va chat duc ((tan thanh) OR (tran thanh)) vi cua tre*".