Perhaps you should try some spelling variations:
thong trinh » thong tinh, chuong trinh, phuong trinh
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
hanh tran » hanh trang, thanh tran, hanh tram
van thong » van thuong, van phong, va thong
trinh han » trinh quan
tran van » luan van
han tap » han tai, toan tap, nhan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) or (chieu xanh)) - hanh tran van thong thong trinh han tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chieu xanh)) - hanh tran van thong thong trinh han tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (chieu xanh)) - hanh tran van thong thong trinh han tap*.