Perhaps you should try some spelling variations:
hoang van » hang va
thanh dai » thanh hai, thanh tai, thanh dat
ban thanh » ban hanh, ban hang
dang van » hang va
cuc ban » cua ban, cac ban, cuu ban
cac cuc » cac cuoc, cac cua, cac nuoc
hieu va » lieu va, hieu qua
te sach » toc sach
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
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: te sach ty ((nang xa) or (((dang van) OR (hoang van)))) hoi. hieu va cac cuc ban thanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang xa) OR (((dang van) OR (hoang van)))) hoi. hieu va cac cuc ban thanh dai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((nang xa) or (((dang van) OR (hoang van)))) hoi. hieu va cac cuc ban thanh dai cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang xa) or (((dang van) OR (hoang van)))) hoi. hieu va cac cuc ban thanh dai cua te*.