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
nang cong » nang song, dang cong, bang cong
tung cao » nung cao, truong cao, trung cap
cao nang » cao dang, cam nang, cao tang
tan thai » tay thai, tan tai, van thai
ban thai » ban than, ban thi, ban tai

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 cao nang cong ((tan thai) OR (ban thai)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tach - thanh tung cao nang cong ((tan thai) OR (ban thai)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tach - thanh tung cao nang cong ((tan thai) OR (ban thai)) cao*.