Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
dung tay » dung tai, dung may, vung tay
lanh hai » manh hai, thanh hai, lang chai
ban lanh » ban hanh, ban linh, ban anh
hieu van » hieu va, thien van, lieu va
dang tay » dang xay, dan tay, bang tay
van cac » van hac, van cau, van bac
cac duc » cac du, cao duc, cac dac
duc ban » duc tan, duc van, dua ban
hai cua » thai cua, dai cua, hoi cua
so sanh » do sanh
sanh y » sinh y, anh y, hanh y

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh y ((dang tay) or (dung tay)) hoi. hieu van cac duc ban lanh hai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh y ((dang tay) OR (dung tay)) hoi. hieu van cac duc ban lanh hai cua viet.
• Adding a wildcard symbol may retrieve word variants: so sanh y ((dang tay) or (dung tay)) hoi. hieu van cac duc ban lanh hai cua viet*.