Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
lieu tinh » trieu tinh, diep tinh, bien tinh
trinh han » trinh quan
hoc lieu » hoc dieu, hoc sieu, hoc tieu
trinh he » trinh hoa, trinh thi, trinh ky
trinh va » trinh van, trinh vat, trinh ve
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc lieu tinh - hanh ((((trinh he) or (trinh han))) or (trinh va)) nhung cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc lieu tinh - hanh ((((trinh he) OR (trinh han))) OR (trinh va)) nhung cong san toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc lieu tinh - hanh ((((trinh he) or (trinh han))) or (trinh va)) nhung cong san toan cao*.