Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
thanh van » thanh san, thanh toan, thanh nhan
cham doc » cham soc, chat doc, chau doc
te sach » toc sach
va cham » va chat, va tham
sach ly » sach y, sach lo, sach ty
hieu va » lieu va, hieu qua
nang co » nang doc, nang noi, nang hoc
doc va » duoc va, hoc va, duc va
cua tu » cua tuc, cua su, cua cu

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 ly ((nang co) or (nang cao)) hoi. hieu va cham doc va ((thanh van) OR (thanh phan)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly ((nang co) OR (nang cao)) hoi. hieu va cham doc va ((thanh van) OR (thanh phan)) cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly ((nang co) or (nang cao)) hoi. hieu va cham doc va ((thanh van) OR (thanh phan)) cua tu".
• Adding a wildcard symbol may retrieve word variants: te sach ly ((nang co) or (nang cao)) hoi. hieu va cham doc va ((thanh van) OR (thanh phan)) cua tu*.