Perhaps you should try some spelling variations:
nganh xay » nganh mac, nganh y, nganh ma
ky nganh » ky nang, ly ngan, k ngan
anh thai » anh thi, anh tai, nhanh thai
cua tre » cua te, cuu tre, cua triet
anh bai » sach bai, danh bat, hinh bai
anh hai » lanh hai, manh hai, anh ha
duc ban » duc tan, duc van, dua ban
cao duc » dao duc, cao suc, giao duc
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
sac ky » cac ky, sai ky
ve cao » va cao, ve bao, ve cac
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nganh xay hoi. hieu ve cao duc ban ((((anh hai) OR (anh bai))) or (anh thai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nganh xay hoi. hieu ve cao duc ban ((((anh hai) OR (anh bai))) OR (anh thai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nganh xay hoi. hieu ve cao duc ban ((((anh hai) OR (anh bai))) or (anh thai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky nganh xay hoi. hieu ve cao duc ban ((((anh hai) OR (anh bai))) or (anh thai)) cua tre*.