Perhaps you should try some spelling variations:
chiet tach » chieu sach
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trung » thanh trung, hanh trang, manh trung
trung nam » trung tam, trong nam, trung cap
tang nong » hang nong, tang dong, tang mong
dan thanh » dang thanh, danh thanh, ban thanh
thanh tap » thanh lap, thanh tai, thanh tay
nam tang » nam thang, nham tang, dam tang
nong dan » cong dan, nong san, nguong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chiet tach) or (chieu sang)) - hanh trung nam tang nong dan thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chiet tach) OR (chieu sang)) - hanh trung nam tang nong dan thanh tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((chiet tach) or (chieu sang)) - hanh trung nam tang nong dan thanh tap*.