Perhaps you should try some spelling variations:
trinh do » trinh ky
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
va nam » van nam, ha nam
va nay » va ngay, va cay
tu lap » truc lap
do cua » doi cua, co cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang xa hoi. hieu ((va nam) or (va nay)) tu lap trinh do cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu ((va nam) OR (va nay)) tu lap trinh do cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu ((va nam) or (va nay)) tu lap trinh do cua tre*.