Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
chat xuc » chat huu, cam xuc, chao xu
cap nuoc » dat nuoc
cua viet » ca viet, hoa viet, cua dieu
tu sach » thu sach, su sach, te sach
cao hoc » co hoc, cho hoc, chat hoc
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 ((chat xuc) or (cap nuoc)) ban thanh lap ((cua viet) OR (cua vat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang cao hoc. hieu van ((chat xuc) OR (cap nuoc)) ban thanh lap ((cua viet) OR (cua vat)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang cao hoc. hieu van ((chat xuc) or (cap nuoc)) ban thanh lap ((cua viet) OR (cua vat))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang cao hoc. hieu van ((chat xuc) or (cap nuoc)) ban thanh lap ((cua viet) OR (cua vat))*.