Perhaps you should try some spelling variations:
thien tinh » khien tinh, thien minh, tien tinh
hoc thien » hoc hien, hoc thieu, hoc thiet
thong cap » thong cac, trung cap, thong cua
tung cap » trung cap, cung cap, trong cap
cong ban » cong bang, cong san, cong tan
ban phan » ban phap, van phan, ban than
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien tinh - thanh ((tung cap) or (thong cap)) trong cong ban phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien tinh - thanh ((tung cap) OR (thong cap)) trong cong ban phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thien tinh - thanh ((tung cap) or (thong cap)) trong cong ban phan cau*.