Perhaps you should try some spelling variations:
cua nuoc » cua quoc, cua nguoi, cua thuoc
lang dai » lang hai, lang mai, lang chai
van hanh » van thanh, ban hanh, van anh
sach ty » sach y, sach tu, sach thu
cua tuc » cua duc, cua tu, cua thuoc
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
dai hoi » dai hoc, dai hai, dai moi
ty lang » tay lang, ty xang, ty hang
cam luc » cau luc

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 ty lang dai hoi. hieu va ((cam luc) or (cam xuc)) van hanh vi ((cua tuc) or (cua nuoc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty lang dai hoi. hieu va ((cam luc) OR (cam xuc)) van hanh vi ((cua tuc) OR (cua nuoc)).
• Adding a wildcard symbol may retrieve word variants: su sach ty lang dai hoi. hieu va ((cam luc) or (cam xuc)) van hanh vi ((cua tuc) or (cua nuoc))*.