Perhaps you should try some spelling variations:
su sach » so sach, vu sach
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
han tai » hang tai, nhan tai, van tai
ve chim » va chim, ve cham, ve chinh
sach ty » sach y, sach tu, sach thu
va cham » va chat, va tham
xuc va » tuc va, luc va, xac va
ma hoi » mai hoi, xa hoi, ma hoa
tai va » thai va, mai va, tri 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: su sach ty nang ma hoi. hieu ((ve chim) or (va cham)) ((xuc va) or (duc va)) han tai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ma hoi. hieu ((ve chim) OR (va cham)) ((xuc va) OR (duc va)) han tai va thiet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ma hoi. hieu ((ve chim) or (va cham)) ((xuc va) or (duc va)) han tai va thiet*.