Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh lap » thanh san, phan lap, thanh hai
hieu van » hieu va, thien van, lieu va
cap nuoc » dat nuoc
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
cao hoc » co hoc, cho hoc, chat hoc
lap cua » lai cua, tap cua, lam cua
y nang » ky nang, ly nang, v nang

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 y nang cao hoc. hieu van ((chao xu) or (cap nuoc)) ban thanh lap cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang cao hoc. hieu van ((chao xu) OR (cap nuoc)) ban thanh lap cua viet.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang cao hoc. hieu van ((chao xu) or (cap nuoc)) ban thanh lap cua viet*.