Perhaps you should try some spelling variations:
nhanh lang » nhanh thang, nhan dang, nhanh dong
thong cong » trong cong, tong cong, thong thong
cong ngang » cong nhan, cong quang, cong lang
ngang toan » nganh toan, dang toan, quang toan
va thong » va thuong, va phuong, he thong
toan ban » van ban
doi hoc » doi hoac, dai hoc, hoi hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hoc dan - ((nhanh lang) or (nhanh quang)) va thong cong ngang toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hoc dan - ((nhanh lang) OR (nhanh quang)) va thong cong ngang toan ban.
• Adding a wildcard symbol may retrieve word variants: doi hoc dan - ((nhanh lang) or (nhanh quang)) va thong cong ngang toan ban*.