Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu tach » thien hach, chiet tach, chieu sach
hoc thieu » toc thieu, hoc hien
chua dong » cua dong, ha dong, huy dong
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, huong dan
nhanh va » nhan va, nhanh ha, thanh va
hanh va » hang va, hanh vi

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 trung ((cua tong) or (chua dong)) cong dan ((nhanh va) OR (hanh va))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tach - thanh trung ((cua tong) OR (chua dong)) cong dan ((nhanh va) OR (hanh va)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tach - thanh trung ((cua tong) or (chua dong)) cong dan ((nhanh va) OR (hanh va))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tach - thanh trung ((cua tong) or (chua dong)) cong dan ((nhanh va) OR (hanh va))*.