Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
han mai » han tai, ban mai, han mac
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
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: vu sach y ((nang xa) or (nang x)) hoi. hieu ve cham ((xuc va) or (tuc va)) han mai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((nang xa) OR (nang x)) hoi. hieu ve cham ((xuc va) OR (tuc va)) han mai va thiet.
• Adding a wildcard symbol may retrieve word variants: vu sach y ((nang xa) or (nang x)) hoi. hieu ve cham ((xuc va) or (tuc va)) han mai va thiet*.