Perhaps you should try some spelling variations:
va trinh » van trinh, va tinh, lap trinh
trinh vi » trinh va, trinh ve, trinh viet
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
sai ky » sac ky
va cau » van cau, va cac, va dau
ke cau » ket cau
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((cac ky) or (sai ky)) nang xa hoi. hieu ((va cau) or (ke cau)) duc va trinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((cac ky) OR (sai ky)) nang xa hoi. hieu ((va cau) OR (ke cau)) duc va trinh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te ((cac ky) or (sai ky)) nang xa hoi. hieu ((va cau) or (ke cau)) duc va trinh vi cua tre*.