Perhaps you should try some spelling variations:
thong tuong » thong thuong, thong thong, thong duong
theo chieu » theo tieu, ho chieu, theo chu
chieu tinh » trieu tinh, lieu tinh, chau tinh
trung dap » trung cap, trung dam, trung lap
trung dai » truong dai, truong dao, trung tam
tuong dan » huong dan, tung dan, xuong dan
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu tinh - hanh ((trung dap) OR (trung dai)) thong tuong dan ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu tinh - hanh ((trung dap) OR (trung dai)) thong tuong dan ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu tinh - hanh ((trung dap) OR (trung dai)) thong tuong dan ((toan cau) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: theo chieu tinh - hanh ((trung dap) OR (trung dai)) thong tuong dan ((toan cau) or (toan tap))*.