Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sach » chieu sach, thien hach, hieu cach
nhung lang » nhung van, nhanh lang, nhung cong
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
trung va » truong va, trang va, trung ha
tan toan » tan tran, tap toan, van 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 thieu sach - thanh trung va ((((nhung lang) or (dung cong))) or (thong cong)) tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh trung va ((((nhung lang) OR (dung cong))) OR (thong cong)) tan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh trung va ((((nhung lang) or (dung cong))) or (thong cong)) tan toan cao*.