Perhaps you should try some spelling variations:
kham duc » pham duc, kham cuoc, pham duy
tan hanh » tan thanh, tang hanh, toan hanh
dai hai » dai han, dai hoi, dai tai
hieu vu » hieu va, hieu ve, hieu su
vu kham » vu khanh
cua tre » cua te, cuu tre, cua triet
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
ma hoi » mai hoi, xa hoi, me hoi
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: tu sai ky nang ((((ma hoi) or (ma hoa))) or (dai hai)). hieu vu kham duc tan hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang ((((ma hoi) OR (ma hoa))) OR (dai hai)). hieu vu kham duc tan hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang ((((ma hoi) or (ma hoa))) or (dai hai)). hieu vu kham duc tan hanh vi cua tre*.