Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thi hanh » thi thanh
hanh lam » thanh lap, hanh kem, hanh va
lam quoc » lam duoc, nam quoc, lam thuoc
quoc ban » quoc bao, quoc lan, quoc quan
dinh cuu » dinh chi
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
tu sac » tu sach, tu san, tu bac
di cuu » di cau, 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 sac) or (tu cac)) ky lang xa hoi. thi hanh lam quoc ban thanh ((di cuu) OR (dinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu cac)) ky lang xa hoi. thi hanh lam quoc ban thanh ((di cuu) OR (dinh cuu)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu cac)) ky lang xa hoi. thi hanh lam quoc ban thanh ((di cuu) OR (dinh cuu)) tre*".