Perhaps you should try some spelling variations:
thi cong » tai cong, thien cong
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
phat duc » pham duc, phan duc, phan duoc
cua viet » ca viet, hoa viet, cua vat
thi nang » ki nang, thi hanh
duc ban » duc tan, duc van, dua ban
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
sai ky » sac ky
tu sai » tu bai, tu san, tu cai

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 xa hoi. ((thi nang) OR (thi cong)) phat duc ban hanh vai ((cua tre) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang xa hoi. ((thi nang) OR (thi cong)) phat duc ban hanh vai ((cua tre) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky nang xa hoi. ((thi nang) OR (thi cong)) phat duc ban hanh vai ((cua tre) or (cua viet))".
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang xa hoi. ((thi nang) OR (thi cong)) phat duc ban hanh vai ((cua tre) or (cua viet))*.