Perhaps you should try some spelling variations:
thieu tach » thien hach, chiet tach, chieu sach
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
hong bang » dong bang, hang ban, hong hanh
cong ban » cong bang, cong san, cong tan
phan cac » nhan cach, phan dau, phan lap
tung va » trung va, tuong va, dung va

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 tach - thanh tung va nhung ((cong ban) or (hong bang)) ((phan tu) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tach - thanh tung va nhung ((cong ban) OR (hong bang)) ((phan tu) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu tach - thanh tung va nhung ((cong ban) or (hong bang)) ((phan tu) or (phan cac))*.