Perhaps you should try some spelling variations:
may trinh » may tinh, lap trinh, quy trinh
nuoc may » nuoc my, nuoc mat, nuoc man
hoc sach » hoc sinh, hoc cac, hoc anh
dang xay » dang van, van xay
sach ky » sac ky, sach y, sach ty
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
ve cac » vien cac
ve cua » le cua, te cua, ve cum
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky dang xay hoi. hieu ((ve cac) or (va cac)) nuoc may trinh ((ve cua) OR (de cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky dang xay hoi. hieu ((ve cac) OR (va cac)) nuoc may trinh ((ve cua) OR (de cua)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ky dang xay hoi. hieu ((ve cac) or (va cac)) nuoc may trinh ((ve cua) OR (de cua)) triet*".