Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec bach » vien bach, viec ban, viec bao
bach nuoc » bach tuoc, sach nuoc, bich ngoc
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
nang xa » lang xa, nang ma, mang xa
va danh » va dinh, va dan, va hanh
dau cua » dai cua, day cua, cau cua
du cua » duy cua, dum cua, hu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty ((nang xa) OR (nang x)) hoi. hieu viec bach nuoc va danh ((du cua) or (dau cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty ((nang xa) OR (nang x)) hoi. hieu viec bach nuoc va danh ((du cua) OR (dau cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty ((nang xa) OR (nang x)) hoi. hieu viec bach nuoc va danh ((du cua) or (dau cua)) te".
• Adding a wildcard symbol may retrieve word variants: so sach ty ((nang xa) OR (nang x)) hoi. hieu viec bach nuoc va danh ((du cua) or (dau cua)) te*.