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
bang cong » dang cong, bang song, hang cong
tung cao » nung cao, truong cao, trung cap
cao bang » cao dang, cao tang, cao nang
tac phat » tan phat, tao phat, sach phat
tam phat » va phat, dao phat, tam than
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 bang cong ((((tac phat) OR (tam phat))) or (tac pham)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh tung cao bang cong ((((tac phat) OR (tam phat))) OR (tac pham)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh tung cao bang cong ((((tac phat) OR (tam phat))) or (tac pham)) tu".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh tung cao bang cong ((((tac phat) OR (tam phat))) or (tac pham)) tu*.