Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
dieu tinh » diep tinh, lieu tinh, dien tinh
cong vang » cong lang, cong quang, cong ngang
vang tuan » van tuan, vong tuan, quang tuan
dung cua » dung luan, dung cho
tuan thu » toan thuc, van thu
so dieu » bo dieu, hoc dieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so dieu tinh - hanh ((huong cua) or (dung cua)) thong cong vang tuan thu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so dieu tinh - hanh ((huong cua) OR (dung cua)) thong cong vang tuan thu.
• Adding a wildcard symbol may retrieve word variants: so dieu tinh - hanh ((huong cua) or (dung cua)) thong cong vang tuan thu*.