Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thu sach » tu sach, thuat sach, thuoc sach
van cham » van chat, van tham, va cham
cham duc » pham duc, cham soc, pham duy
van phan » van phong, van thanh, luan phan
phan lap » phan dau
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
duc van » duc va, duc tan, duc manh
lap lam » cap lam, lam lam, lap lai
x hoi » xa hoi, o hoi
5 hoi » o hoi
viec » viet, vien

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty nang ((((x hoi) OR (5 hoi))) or (x ho)). hieu van cham duc van phan lap lam viec~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang ((((x hoi) OR (5 hoi))) OR (x ho)). hieu van cham duc van phan lap lam viec.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang ((((x hoi) OR (5 hoi))) or (x ho)). hieu van cham duc van phan lap lam viec".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang ((((x hoi) OR (5 hoi))) or (x ho)). hieu van cham duc van phan lap lam viec*.