Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
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
tac phat » tam phat, tan phat, tao phat
tac pham » thuc pham, san pham

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 xanh - thanh tung cao nang cong ((tac phat) or (tac pham)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh tung cao nang cong ((tac phat) OR (tac pham)) tu.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh tung cao nang cong ((tac phat) or (tac pham)) tu*.