Perhaps you should try some spelling variations:
thien van » thi van
tinh vai » tinh va, tinh hai, tinh bai
dau tren » dau tien, dat tren, dau tieng
te sach » toc sach
sach ky » sac ky, sach y, sach ty
van cam » van nam, van lam, van cau
va tinh » may tinh
vai dau » va dau, van dau, xvii dau
cam tu » cam thu, nam tu, dam tu
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang ((x hoi) or (o hoi)). thien van cam tu va tinh vai dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((x hoi) OR (o hoi)). thien van cam tu va tinh vai dau tren.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((x hoi) or (o hoi)). thien van cam tu va tinh vai dau tren*.