Perhaps you should try some spelling variations:
xach tay » canh tay
hieu van » hieu va, thien van, lieu va
va dinh » van dinh, va kinh, va tinh
van cam » van nam, van lam, van cau
dinh tu » danh tu, dinh cu, tinh tu
sach tu » sach thu, cach tu, sach ty
nano x » nano 1
nano o » nano 1, nano cuo, nano mot
xuc va » duc va, tuc va, luc va
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((xach tay) or (sach tu)) ((nano x) or (nano o)) ho. hieu van cam xuc va dinh tu va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((xach tay) OR (sach tu)) ((nano x) OR (nano o)) ho. hieu van cam xuc va dinh tu va thiet.
• Adding a wildcard symbol may retrieve word variants: tu ((xach tay) or (sach tu)) ((nano x) or (nano o)) ho. hieu van cam xuc va dinh tu va thiet*.