Perhaps you should try some spelling variations:
thanh tra » thanh toan, thanh hoa
va thanh » gia thanh, ban thanh, va tinh
hieu va » lieu va, hieu qua
tra cua » trau cua, trua cua, tra cuu
dao xuc » dao duc, dao tuc, dao xu
tu sach » thu sach, te sach, tu cach
ky lang » ky dang, ky tang, tay lang
su sach » so sach, vu sach
va dao » ca dao
xuc va » duc va, tuc va, luc va
cua cu » cua chu, cua cau, cua su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) ((ky lang) OR (ky nang)) xa hoi. hieu va dao xuc va thanh tra cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ((ky lang) OR (ky nang)) xa hoi. hieu va dao xuc va thanh tra cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ((ky lang) OR (ky nang)) xa hoi. hieu va dao xuc va thanh tra cua cu".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ((ky lang) OR (ky nang)) xa hoi. hieu va dao xuc va thanh tra cua cu*.