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