Perhaps you should try some spelling variations:
cong ngang » cong nhan, cong quang, cong lang
ngang toan » nganh toan, dang toan, quang toan
canh tran » canh tranh, hanh trang, banh trang
dong cong » duong cong, dung cong, dang cong
tran van » luan van
toan cao » toan ban, toan tap
hoc cay » hoc cao, hoc may, hoc cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc cay trong - canh tran van dong cong ngang toan cao~.
• Adding a wildcard symbol may retrieve word variants: hoc cay trong - canh tran van dong cong ngang toan cao*.