Perhaps you should try some spelling variations:
cong ngang » cong nhan, cong quang, cong lang
thong cong » trong cong, tong cong, thong thong
ngang toan » nganh toan, dang toan, quang toan
thi hieu » thi chieu, thi hien, thi dieu
sinh cua » manh cua, dinh cuu, sinh va
toan ban » van ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chi) or (thi hieu)) xanh - hanh ((tinh quang) or (sinh cua)) thong cong ngang toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chi) OR (thi hieu)) xanh - hanh ((tinh quang) OR (sinh cua)) thong cong ngang toan ban.
• Adding a wildcard symbol may retrieve word variants: ((doi chi) or (thi hieu)) xanh - hanh ((tinh quang) or (sinh cua)) thong cong ngang toan ban*.