Perhaps you should try some spelling variations:
thieu sach » chieu sach, hieu cach, theo sach
thien hach » thien thanh
hanh trung » thanh trung, hanh trang, manh trung
nhung cong » dung cong, thong cong, hang cong
hien hanh » dieu hanh
trung cap » truong cao, trung tam
cap nhung » cam nhung, vap nhung, dap nhung
cong tan » cong tac, cong san, cong thanh
tan khan » tan khang, tan nhan, toan khoan
khan cap » khan ap, than cap, khoan cam

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) or (((thien hach) OR (hien hanh)))) - hanh trung cap nhung cong tan khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (((thien hach) OR (hien hanh)))) - hanh trung cap nhung cong tan khan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sach) or (((thien hach) OR (hien hanh)))) - hanh trung cap nhung cong tan khan cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (((thien hach) OR (hien hanh)))) - hanh trung cap nhung cong tan khan cap*.