Perhaps you should try some spelling variations:
doanh bao » doanh bat, doanh ban, doanh bac
doanh dao » doanh cao, doanh giao, doanh duoc
hieu van » hieu va, thien van, lieu va
ve cach » ve cac, ve canh
toc vay » toc tay, toc va, toc giay
van cau » van dau, van hau, van chat
cau toc » cac toc, cao toc, cau hoc
lang xa » lang ha, dang xay, lang van
tu lang » cu lang, tu lanh, xu lang
va cach » va cac
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: ((ve cach) OR (va cach)) tu lang xa hoi. hieu van cau toc vay ((doanh dao) or (doanh bao)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ve cach) OR (va cach)) tu lang xa hoi. hieu van cau toc vay ((doanh dao) OR (doanh bao)) cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ve cach) OR (va cach)) tu lang xa hoi. hieu van cau toc vay ((doanh dao) or (doanh bao)) cua te*".