Perhaps you should try some spelling variations:
chua tri » chu tri, chua trieu, chua tivi
thanh va » thanh van, hanh va, thanh ha
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
cau tuc » cau truc, cau tu, cau luc
su sach » so sach
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
vu sach » vu bach, vu khach
van cau » van dau, van hau, van chat
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 (vu sach)) ty nang xa hoi. hieu van cau tuc va thanh va ((cua tre) or (chua tri))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ty nang xa hoi. hieu van cau tuc va thanh va ((cua tre) OR (chua tri)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ty nang xa hoi. hieu van cau tuc va thanh va ((cua tre) or (chua tri))".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ty nang xa hoi. hieu van cau tuc va thanh va ((cua tre) or (chua tri))*.