Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
ve chat » va chat, van chat
han mai » han tai, ban mai, han mac
y nang » ky nang, ly nang, v nang
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 hoi. hieu ((va cham) or (ve chat)) ((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 hoi. hieu ((va cham) OR (ve chat)) ((xuc va) OR (tuc va)) han mai va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang xa hoi. hieu ((va cham) or (ve chat)) ((xuc va) OR (tuc va)) han mai va thiet".
• Adding a wildcard symbol may retrieve word variants: vu sach y nang xa hoi. hieu ((va cham) or (ve chat)) ((xuc va) OR (tuc va)) han mai va thiet*.