Perhaps you should try some spelling variations:
dieu hien » dieu khien, dieu kien, bieu hien
danh lai » danh sai, gianh lai, dinh lam
su sach » so sach, vu sach
cac lop » cac hop, cac loai
lai cua » dai cua, hai cua, lai chau
va danh » va dinh, va dan, va hanh
cac lo » cac co, cac bo, cac ho
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((y nang) OR (v nang)) xa hoi. dieu hien ((cac lo) or (cac lop)) va danh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (v nang)) xa hoi. dieu hien ((cac lo) OR (cac lop)) va danh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y nang) OR (v nang)) xa hoi. dieu hien ((cac lo) or (cac lop)) va danh lai cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) OR (v nang)) xa hoi. dieu hien ((cac lo) or (cac lop)) va danh lai cua te*.