Perhaps you should try some spelling variations:
tinh ban » tinh bang, trinh ban, tinh bac
dau tren » dau tien, dat tren, dau tieng
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van hau » van ha, van hai, van dau
va tinh » may tinh
ban dau » bat dau, ban dan, van dau

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 xa hoi. hieu ((van dao) or (van hau)) tu va tinh ban dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ((van dao) OR (van hau)) tu va tinh ban dau tren.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ((van dao) or (van hau)) tu va tinh ban dau tren*.