Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
tang dai » tang tai, tang dan, tang da
lang dai » lang hai, lang mai, lang chai
te sach » toc sach
vu chao » vu cao, vu cham, vu chat
hieu vu » hieu va, hieu ve, hieu su
vi cua » vai cua, di cua
cua te » cua tu
xu va » xu van, tu va, su va

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) or (tu cac)) ky ((tang dai) OR (lang dai)) hoi. hieu vu chao xu va thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (tu cac)) ky ((tang dai) OR (lang dai)) hoi. hieu vu chao xu va thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (tu cac)) ky ((tang dai) OR (lang dai)) hoi. hieu vu chao xu va thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (tu cac)) ky ((tang dai) OR (lang dai)) hoi. hieu vu chao xu va thanh vi cua te*.