Perhaps you should try some spelling variations:
hieu tinh » chieu tinh, lieu tinh, kieu tinh
trang cua » tranh cua, tang cua, trung cua
dung cong » dung trong
cong tinh » cong trinh, cong vinh, long tinh
doc hieu » toc thieu, hoc thieu, hoc hien
hang cua » mang cua, hang ca, huong cua
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: doc hieu tinh - hanh ((trang cua) or (hang cua)) dung cong tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu tinh - hanh ((trang cua) OR (hang cua)) dung cong tinh toan cao.
• Adding a wildcard symbol may retrieve word variants: doc hieu tinh - hanh ((trang cua) or (hang cua)) dung cong tinh toan cao*.