Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
tuong cong » truong cong, trong cong, tong cong
trung can » trung van, trong can, trung ca
trung cap » truong cao, trung tam
cong vinh » cong trinh, trong vinh, cong viec
vinh toan » tinh toan, hinh toan, minh 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: toc thieu sach - thanh ((trung can) or (trung cap)) tuong cong vinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - thanh ((trung can) OR (trung cap)) tuong cong vinh toan cao.
• Adding a wildcard symbol may retrieve word variants: toc thieu sach - thanh ((trung can) or (trung cap)) tuong cong vinh toan cao*.