Perhaps you should try some spelling variations:
thieu hach » thien hach, chieu sach, hieu cach
truong cua » truong ca, truong quan, truong cao
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
trung cua » trung tuan, trung cap, dung cua
cong van » cong vang, cong san, song van
van tai » von tai, van tuan
tai cao » thai cao, tao cao, tai sao

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu hach - thanh ((((trung cua) OR (truong cua))) OR (truong dai)) nhung cong van tai cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu hach - thanh ((((trung cua) OR (truong cua))) or (truong dai)) nhung cong van tai cao~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu hach - thanh ((((trung cua) OR (truong cua))) or (truong dai)) nhung cong van tai cao*.